merge declaration and init. variable is not used outside the loop.

Originally committed as revision 15090 to svn://svn.ffmpeg.org/ffmpeg/trunk

libavcodec/eac3dec.c

@@ -399,9 +399,8 @@ int ff_eac3_parse_header(AC3DecodeContext *s)
         }
     } else {
         /* LUT-based exponent strategy syntax */
-        int frmchexpstr;
         for (ch = !((s->channel_mode > 1) && num_cpl_blocks); ch <= s->fbw_channels; ch++) {
-            frmchexpstr = get_bits(gbc, 5);
+            int frmchexpstr = get_bits(gbc, 5);
             for (blk = 0; blk < 6; blk++) {
                 s->exp_strategy[blk][ch] = ff_eac3_frm_expstr[frmchexpstr][blk];
             }