Fix Clang-tidy unit tests warning

When running Clang-tidy for runtime with unit tests also built, the following warnings are found:

C:\Users\aarotone\Workspace\qtsaferenderer-runtime\tests\auto\saferenderer\saferenderer\tst_qsaferenderer.cpp:896:5: warning: Passed-by-value struct argument contains uninitialized data (e.g., field: 'A') [clang-analyzer-core.CallAndMessage]
1: Assuming the condition is false in C:\Users\aarotone\Workspace\qtsaferenderer-runtime\tests\auto\saferenderer\saferenderer\tst_qsaferenderer.cpp:852
2: expanded from macro 'QVERIFY' in C:\Qt2.1.0_RC1\6.5.4\mingw_64\include\QtTest\qtestcase.h:31
3: Assuming the condition is false in C:\Users\aarotone\Workspace\qtsaferenderer-runtime\tests\auto\saferenderer\saferenderer\tst_qsaferenderer.cpp:852
4: expanded from macro 'QVERIFY' in C:\Qt2.1.0_RC1\6.5.4\mingw_64\include\QtTest\qtestcase.h:31
5: Taking false branch in C:\Users\aarotone\Workspace\qtsaferenderer-runtime\tests\auto\saferenderer\saferenderer\tst_qsaferenderer.cpp:852
6: expanded from macro 'QVERIFY' in C:\Qt2.1.0_RC1\6.5.4\mingw_64\include\QtTest\qtestcase.h:31
7: Loop condition is false. Exiting loop in C:\Users\aarotone\Workspace\qtsaferenderer-runtime\tests\auto\saferenderer\saferenderer\tst_qsaferenderer.cpp:852
8: expanded from macro 'QVERIFY' in C:\Qt2.1.0_RC1\6.5.4\mingw_64\include\QtTest\qtestcase.h:29
9: Assuming the condition is false in C:\Users\aarotone\Workspace\qtsaferenderer-runtime\tests\auto\saferenderer\saferenderer\tst_qsaferenderer.cpp:873
10: expanded from macro 'QVERIFY' in C:\Qt2.1.0_RC1\6.5.4\mingw_64\include\QtTest\qtestcase.h:31
11: Taking false branch in C:\Users\aarotone\Workspace\qtsaferenderer-runtime\tests\auto\saferenderer\saferenderer\tst_qsaferenderer.cpp:873
12: expanded from macro 'QVERIFY' in C:\Qt2.1.0_RC1\6.5.4\mingw_64\include\QtTest\qtestcase.h:31
13: Loop condition is false. Exiting loop in C:\Users\aarotone\Workspace\qtsaferenderer-runtime\tests\auto\saferenderer\saferenderer\tst_qsaferenderer.cpp:873
14: expanded from macro 'QVERIFY' in C:\Qt2.1.0_RC1\6.5.4\mingw_64\include\QtTest\qtestcase.h:29
15: Assuming the condition is false in C:\Users\aarotone\Workspace\qtsaferenderer-runtime\tests\auto\saferenderer\saferenderer\tst_qsaferenderer.cpp:884
16: expanded from macro 'QVERIFY' in C:\Qt2.1.0_RC1\6.5.4\mingw_64\include\QtTest\qtestcase.h:31
17: Taking false branch in C:\Users\aarotone\Workspace\qtsaferenderer-runtime\tests\auto\saferenderer\saferenderer\tst_qsaferenderer.cpp:884
18: expanded from macro 'QVERIFY' in C:\Qt2.1.0_RC1\6.5.4\mingw_64\include\QtTest\qtestcase.h:31
19: Loop condition is false. Exiting loop in C:\Users\aarotone\Workspace\qtsaferenderer-runtime\tests\auto\saferenderer\saferenderer\tst_qsaferenderer.cpp:884
20: expanded from macro 'QVERIFY' in C:\Qt2.1.0_RC1\6.5.4\mingw_64\include\QtTest\qtestcase.h:29
21: Passed-by-value struct argument contains uninitialized data (e.g., field: 'A') in C:\Users\aarotone\Workspace\qtsaferenderer-runtime\tests\auto\saferenderer\saferenderer\tst_qsaferenderer.cpp:896