svq1enc: fix ptr type mismatch warning

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

libavcodec/svq1enc.c

@@ -95,7 +95,7 @@ static void svq1_write_header(SVQ1Context *s, int frame_type)
         /* output 5 unknown bits (2 + 2 + 1) */
         put_bits(&s->pb, 5, 2); /* 2 needed by quicktime decoder */
 
-        i= ff_match_2uint16(ff_svq1_frame_size_table, FF_ARRAY_ELEMS(ff_svq1_frame_size_table), s->frame_width, s->frame_height);
+        i= ff_match_2uint16((void*)ff_svq1_frame_size_table, FF_ARRAY_ELEMS(ff_svq1_frame_size_table), s->frame_width, s->frame_height);
         put_bits(&s->pb, 3, i);
 
         if (i == 7)