Bug 1510548 - Suppress MSVC warning C4024 for libdav1d. r=cpeterson

Differential Revision: https://phabricator.services.mozilla.com/D18678

--HG--
extra : moz-landing-system : lando

media/libdav1d/moz.build

@@ -162,6 +162,7 @@ if CONFIG['OS_TARGET'] == 'WINNT':
 if CONFIG['CC_TYPE'] == 'msvc':
     LOCAL_INCLUDES += ['../../third_party/dav1d/include/compat/msvc/']
     EXPORTS.dav1d += ['../../third_party/dav1d/include/compat/msvc/stdatomic.h']
+    CFLAGS += ['-wd4028']
 
 if CONFIG['CC_TYPE'] == 'gcc':
     LOCAL_INCLUDES += ['../../third_party/dav1d/include/compat/gcc/']