Normalize triplets in gain_val_tab[][] so gain_exp_tab[] can be just an

one-dimensional array.

Originally committed as revision 15273 to svn://svn.ffmpeg.org/ffmpeg/trunk

libavcodec/ra144.c

@@ -136,7 +136,7 @@ static void add_wav(int16_t *dest, int n, int skip_first, int *m,
 
     v[0] = 0;
     for (i=!skip_first; i<3; i++)
-        v[i] = (gain_val_tab[n][i] * m[i]) >> (gain_exp_tab[n][i] + 1);
+        v[i] = (gain_val_tab[n][i] * m[i]) >> gain_exp_tab[n];
 
     for (i=0; i < BLOCKSIZE; i++)
         dest[i] = (s1[i]*v[0] + s2[i]*v[1] + s3[i]*v[2]) >> 12;