gdi32: Add a missing break (Coverity).

dlls/gdi32/opentype.c

@@ -555,6 +555,7 @@ static LANGID get_name_record_langid( enum OPENTYPE_PLATFORM_ID platform, USHORT
         default:
             break;
         }
+        break;
     default:
         FIXME( "unknown platform %d\n", platform );
         break;