Move some variable declarations to inside of loops.

Originally committed as revision 20048 to svn://svn.ffmpeg.org/ffmpeg/trunk

libavcodec/ac3.c

@@ -216,7 +216,7 @@ void ff_ac3_bit_alloc_calc_bap(int16_t *mask, int16_t *psd, int start, int end,
                                int snr_offset, int floor,
                                const uint8_t *bap_tab, uint8_t *bap)
 {
-    int i, j, end1, v, address;
+    int i, j;
 
     /* special case, if snr offset is -960, set all bap's to zero */
     if (snr_offset == -960) {
@@ -227,10 +227,10 @@ void ff_ac3_bit_alloc_calc_bap(int16_t *mask, int16_t *psd, int start, int end,
     i = start;
     j = bin_to_band_tab[start];
     do {
-        v = (FFMAX(mask[j] - snr_offset - floor, 0) & 0x1FE0) + floor;
-        end1 = FFMIN(band_start_tab[j] + ff_ac3_critical_band_size_tab[j], end);
+        int v = (FFMAX(mask[j] - snr_offset - floor, 0) & 0x1FE0) + floor;
+        int end1 = FFMIN(band_start_tab[j] + ff_ac3_critical_band_size_tab[j], end);
         for (; i < end1; i++) {
-            address = av_clip((psd[i] - v) >> 5, 0, 63);
+            int address = av_clip((psd[i] - v) >> 5, 0, 63);
             bap[i] = bap_tab[address];
         }
     } while (end > band_start_tab[j++]);