ClientServerOutsideProcessSlowTest.RestartProcessAfterAliveTimeout is broken after QtcProcess changes

1  NtWaitForSingleObject                                                                           ntdll                                    0x7ffccad7cf24 
2  WaitForSingleObjectEx                                                                           KERNELBASE                               0x7ffcc80c1f63 
3  QWaitConditionPrivate::wait                                                                     qwaitcondition_win.cpp              111  0x7ffc3b6dc113 
4  QWaitCondition::wait                                                                            qwaitcondition_win.cpp              169  0x7ffc3b6dbb21 
5  QWaitCondition::wait                                                                            qwaitcondition_win.cpp              180  0x7ffc3b6dbaa4 
6  Utils::Internal::LauncherHandle::doWaitForSignal                                                launchersocket.cpp                  582  0x7ffc4f378a2f 
7  Utils::Internal::LauncherHandle::waitForSignal                                                  launchersocket.cpp                  548  0x7ffc4f378384 
8  Utils::Internal::CallerHandle::waitForSignal                                                    launchersocket.cpp                  509  0x7ffc4f377bd6 
9  Utils::Internal::CallerHandle::waitForFinished                                                  launchersocket.cpp                  128  0x7ffc4f376222 
10 Utils::Internal::ProcessLauncherImpl::waitForFinished                                           qtcprocess.cpp                      445  0x7ffc4f481cba 
11 Utils::QtcProcess::waitForFinished                                                              qtcprocess.cpp                      1109 0x7ffc4f473299 
12 ClangBackEnd::ConnectionClient::endProcess                                                      connectionclient.cpp                170  0x7ffc5aa0d44b 
13 ClangBackEnd::ConnectionClient::finishProcess                                                   connectionclient.cpp                268  0x7ffc5aa0d395 
14 ClangBackEnd::ConnectionClient::finishProcess                                                   connectionclient.cpp                250  0x7ffc5aa0cd6a 
15 ClientServerOutsideProcess::TearDown                                                            clientserveroutsideprocess-test.cpp 156  0x7ff70b84e825 
16 testing::internal::HandleSehExceptionsInMethodIfSupported<testing::Test,void>                   gtest.cc                            2593 0x7ff70c5c86bd 
17 testing::internal::HandleExceptionsInMethodIfSupported<testing::Test,void>                      gtest.cc                            2644 0x7ff70c5c82f3 
18 testing::Test::Run                                                                              gtest.cc                            2693 0x7ff70c59dcf2 
19 testing::TestInfo::Run                                                                          gtest.cc                            2863 0x7ff70c59e8ac 
20 testing::TestSuite::Run                                                                         gtest.cc                            3015 0x7ff70c59f19e 
21 testing::internal::UnitTestImpl::RunAllTests                                                    gtest.cc                            5599 0x7ff70c5a6cee 
22 testing::internal::HandleSehExceptionsInMethodIfSupported<testing::internal::UnitTestImpl,bool> gtest.cc                            2593 0x7ff70c5c88ad 
23 testing::internal::HandleExceptionsInMethodIfSupported<testing::internal::UnitTestImpl,bool>    gtest.cc                            2644 0x7ff70c5c8603 
24 testing::UnitTest::Run                                                                          gtest.cc                            5185 0x7ff70c59fa0d 
25 RUN_ALL_TESTS                                                                                   gtest.h                             2483 0x7ff70b9d79e3 
26 main                                                                                            unittests-main.cpp                  74   0x7ff70b9d6e1f 
27 invoke_main                                                                                     exe_common.inl                      79   0x7ff70cbb4c59 
28 __scrt_common_main_seh                                                                          exe_common.inl                      288  0x7ff70cbb4b3e 
29 __scrt_common_main                                                                              exe_common.inl                      331  0x7ff70cbb49fe 
30 mainCRTStartup                                                                                  exe_main.cpp                        17   0x7ff70cbb4cee 
31 BaseThreadInitThunk                                                                             KERNEL32                                 0x7ffcc9637c24 
32 RtlUserThreadStart