typo, also fix warning: asf.c:90: warning: passing argument 2 of 'get_buffer'...

typo, also fix warning: asf.c:90: warning: passing argument 2 of 'get_buffer' from incompatible pointer type

git-svn-id: file:///var/local/repositories/ffmpeg/trunk@11681 9553f0bf-9b14-0410-a0b8-cfaf0461ba5b

libavformat/asf.c

@@ -87,7 +87,7 @@ static void print_guid(const GUID *g)
 static void get_guid(ByteIOContext *s, GUID *g)
 {
     assert(sizeof(*g) == 16);
-    get_buffer(s, g, sizeof(*g));
+    get_buffer(s, *g, sizeof(*g));
 }
 
 #if 0