https://bugzilla.redhat.com/show_bug.cgi?id=1290846

Description of problem:
When I select input methods in fctix input methods configuration, it crashed.

Version-Release number of selected component:
kde-cli-tools-5.4.3-1.fc23

Additional info:
reporter: libreport-2.6.3
backtrace_rating: 4
cmdline: kcmshell5 kcm_fcitx
crash_function: QArrayData::allocate
executable: /usr/bin/kcmshell5
global_pid: 1231
kernel: 4.2.6-301.fc23.x86_64
runlevel: N 5
type: CCpp
uid: 1000

Truncated backtrace:
Thread no. 1 (10 frames)
#1 QArrayData::allocate at tools/qarraydata.cpp:101
#2 QTypedArrayData<unsigned short>::allocate at ../../src/corelib/tools/qarraydata.h:216
#3 QString::QString at tools/qstring.cpp:1497
#4 parse_locale_tag at tools/qlocale.cpp:376
#5 qt_splitLocaleName at tools/qlocale.cpp:405
#6 QLocalePrivate::getLangAndCountry at tools/qlocale.cpp:459
#7 findLocaleData at tools/qlocale.cpp:474
#8 localePrivateByName at tools/qlocale.cpp:700
#9 QLocale::QLocale at tools/qlocale.cpp:760
#10 Fcitx::IMPage::Private::IMModel::data at ../../src/impage.cpp:116