debloat logs from common warning

Author: henderkes

win32/build/confutils.js

@@ -3363,7 +3363,7 @@ function toolset_setup_common_cflags()
 
 		ADD_FLAG("CFLAGS", "/Zc:wchar_t");
 	} else if (CLANG_TOOLSET) {
-		ADD_FLAG("CFLAGS", "-Wno-deprecated-declarations");
+		ADD_FLAG("CFLAGS", "-Wno-deprecated-declarations -Wno-microsoft-enum-forward-reference");
 		if (TARGET_ARCH == 'x86') {
 			ADD_FLAG('CFLAGS', '-m32');
 		} else {