Fix Heap Alloction issues in QTFred (#7334)

* Build using /MD flag if building QTFred and on windows

Fixes Multiple QTFred heap crashes due to mismatched runtime types.

* Actually Change Right value

Author: TheForce172

cmake/toolchain-msvc.cmake

@@ -71,7 +71,7 @@ if (MSVC_RELEASE_DEBUGGING)
 	endif()
 endif()
 
-IF(MSVC_USE_RUNTIME_DLL)
+IF(MSVC_USE_RUNTIME_DLL OR FSO_BUILD_QTFRED)
 	set(CMAKE_MSVC_RUNTIME_LIBRARY "MultiThreaded$<$<NOT:$<CONFIG:Release>>:Debug>DLL")
 	add_compile_definitions(_AFXDLL)
 ELSE(MSVC_USE_RUNTIME_DLL)