cabac: fix cabac encoder

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
(cherry picked from commit 89653ea728)

libavcodec/cabac.c

@@ -161,10 +161,14 @@ void ff_init_cabac_states(CABACContext *c){
         ff_h264_mps_state[2*i+1]= 2*mps_state[i]+1;
 
         if( i ){
+            ff_h264_lps_state[2*i+0]=
             ff_h264_mlps_state[128-2*i-1]= 2*lps_state[i]+0;
+            ff_h264_lps_state[2*i+1]=
             ff_h264_mlps_state[128-2*i-2]= 2*lps_state[i]+1;
         }else{
+            ff_h264_lps_state[2*i+0]=
             ff_h264_mlps_state[128-2*i-1]= 1;
+            ff_h264_lps_state[2*i+1]=
             ff_h264_mlps_state[128-2*i-2]= 0;
         }
     }