[CMAKE] Fix definition of NDEBUG on MSVC release builds

Prevents redefinition warnings.

Author: tkreuzer

sdk/cmake/msvc.cmake

@@ -167,7 +167,7 @@ endif()
 if(NOT (_PREFAST_ OR _VS_ANALYZE_))
     add_compile_options($<$<CONFIG:Debug>:/Zi>)
 endif()
-add_compile_definitions($<$<CONFIG:Release>:NDEBUG>)
+add_compile_definitions($<$<CONFIG:Release>:NDEBUG=>)
 
 # Hotpatchable images
 if(ARCH STREQUAL "i386")