Use a local variable in the inner loop of group_exponents() to simplify the

code.

Originally committed as revision 26355 to svn://svn.ffmpeg.org/ffmpeg/trunk

libavcodec/ac3enc.c

@@ -642,10 +642,11 @@ static void group_exponents(AC3EncodeContext *s)
     for (blk = 0; blk < AC3_MAX_BLOCKS; blk++) {
         AC3Block *block = &s->blocks[blk];
         for (ch = 0; ch < s->channels; ch++) {
-            if (s->exp_strategy[ch][blk] == EXP_REUSE)
+            int exp_strategy = s->exp_strategy[ch][blk];
+            if (exp_strategy == EXP_REUSE)
                 continue;
-            group_size = s->exp_strategy[ch][blk] + (s->exp_strategy[ch][blk] == EXP_D45);
-            nb_groups = exponent_group_tab[s->exp_strategy[ch][blk]-1][s->nb_coefs[ch]];
+            group_size = exp_strategy + (exp_strategy == EXP_D45);
+            nb_groups = exponent_group_tab[exp_strategy-1][s->nb_coefs[ch]];
             bit_count += 4 + (nb_groups * 7);
             p = block->exp[ch];