Make gcc 2.95 happy.

Originally committed as revision 15589 to svn://svn.ffmpeg.org/ffmpeg/trunk

libavformat/dv.c

@@ -201,7 +201,7 @@ static int dv_extract_audio_info(DVDemuxContext* c, uint8_t* frame)
     quant = as_pack[4] & 0x07; /* 0 - 16bit linear, 1 - 12bit nonlinear */
 
     /* note: ach counts PAIRS of channels (i.e. stereo channels) */
-    ach = (int[4]){  1,  0,  2,  4}[stype];
+    ach = ((int[4]){  1,  0,  2,  4})[stype];
     if (ach == 1 && quant && freq == 2)
         ach = 2;