size_t warning fixed

6 jobs for cpp_check in 48 minutes and 38 seconds (queued for 1 second)
Status Job ID Name Coverage
  Test
passed clang-c++11-Qt5 #13937
Linux MultiThreads

00:09:34

passed cppcheck #13938
Linux MultiThreads

00:35:08

passed gcc-c++11-Qt5 #13936
Linux

00:03:56

passed VS2013-Qt-5.5.1-x64 #13941
VS2013 Qt551

00:19:38

passed VS2015-Qt-5.6.0-x32 #13940
VS2015 Qt56

00:17:12

passed VS2015-Qt-5.6.0-x64 #13939
VS2015 Qt56

00:21:38