Index: msvc.cmake
===================================================================
--- cmake/msvc.cmake	(revision 67605)
+++ cmake/msvc.cmake	(working copy)
@@ -67,7 +67,8 @@
 
 # Enable warnings above the default level, but don't treat them as errors:
 # - C4115: named type definition in parentheses
-add_compile_flags("/w14115")
+# - C4189: local variable initialized but not referenced
+add_compile_flags("/w14115 /w14189")
 
 # Debugging
 #if(${CMAKE_BUILD_TYPE} STREQUAL "Debug")