use C99 syntax for field init

git-svn-id: file:///var/local/repositories/ffmpeg/trunk@1023 9553f0bf-9b14-0410-a0b8-cfaf0461ba5b

libav/dv.c

@@ -90,7 +90,7 @@ AVInputFormat dv_iformat = {
     dv_read_header,
     dv_read_packet,
     dv_read_close,
-    extensions: "dv",
+    .extensions = "dv",
 };
 
 #if 0