cmake HAVE_VSSCANF examples

Ravbug/UnityHubNative wxWidgets/build/cmake/setup.cmake :532 

check_symbol_exists(vsscanf stdio.h HAVE_VSSCANF)

fligger/FateInjector wxWidgets-3.2.0/build/cmake/setup.cmake :575 

check_symbol_exists(vsscanf stdio.h HAVE_VSSCANF)

wxWidgets/wxWidgets build/cmake/setup.cmake :532 

check_symbol_exists(vsscanf stdio.h HAVE_VSSCANF)