ff_swb_offset_* tables should be const.

Originally committed as revision 19782 to svn://svn.ffmpeg.org/ffmpeg/trunk

libavcodec/aactab.c

@@ -1003,7 +1003,7 @@ static const uint16_t swb_offset_128_8[] = {
     36,  44,  52,  60,  72,  88, 108, 128
 };
 
-const uint16_t *ff_swb_offset_1024[] = {
+const uint16_t * const ff_swb_offset_1024[] = {
     swb_offset_1024_96, swb_offset_1024_96, swb_offset_1024_64,
     swb_offset_1024_48, swb_offset_1024_48, swb_offset_1024_32,
     swb_offset_1024_24, swb_offset_1024_24, swb_offset_1024_16,
@@ -1011,7 +1011,7 @@ const uint16_t *ff_swb_offset_1024[] = {
     swb_offset_1024_8
 };
 
-const uint16_t *ff_swb_offset_128[] = {
+const uint16_t * const ff_swb_offset_128[] = {
     /* The last entry on the following row is swb_offset_128_64 but is a
        duplicate of swb_offset_128_96. */
     swb_offset_128_96, swb_offset_128_96, swb_offset_128_96,

libavcodec/aactab.h

@@ -65,8 +65,8 @@ extern const uint16_t  ff_aac_spectral_sizes[11];
 
 extern const float *ff_aac_codebook_vectors[];
 
-extern const uint16_t *ff_swb_offset_1024[13];
-extern const uint16_t *ff_swb_offset_128 [13];
+extern const uint16_t * const ff_swb_offset_1024[13];
+extern const uint16_t * const ff_swb_offset_128 [13];
 
 extern const uint8_t ff_tns_max_bands_1024[13];
 extern const uint8_t ff_tns_max_bands_128 [13];