vc1: add missing entries to ff_vc1_fps_nr.

Fixes out of array read

Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

libavcodec/vc1data.c

@@ -84,7 +84,7 @@ const uint8_t ff_vc1_mbmode_intfrp[2][15][4] = {
     }
 };
 
-const int ff_vc1_fps_nr[5] = { 24, 25, 30, 50, 60 },
+const int ff_vc1_fps_nr[7] = { 24, 25, 30, 50, 60, 48, 72},
           ff_vc1_fps_dr[2] = { 1000, 1001 };
 const uint8_t ff_vc1_pquant_table[3][32] = {
     /* Implicit quantizer */

libavcodec/vc1data.h

@@ -41,7 +41,7 @@ extern const int ff_vc1_ttfrm_to_tt[4];
 extern const uint8_t ff_vc1_mv_pmode_table[2][5];
 extern const uint8_t ff_vc1_mv_pmode_table2[2][4];
 
-extern const int ff_vc1_fps_nr[5], ff_vc1_fps_dr[2];
+extern const int ff_vc1_fps_nr[7], ff_vc1_fps_dr[2];
 extern const uint8_t ff_vc1_pquant_table[3][32];
 
 /* MBMODE table for interlaced frame P-picture */