Make denoise_dct_c() and dct_quantize_trellis_c() static in definitions

1d4da6a4 added static to the
prototypes for these fuctions.  Adding it to the definitions
as well.
Signed-off-by: Mans Rullgard <mans@mansr.com>

libavcodec/mpegvideo_enc.c

@@ -2984,7 +2984,7 @@ static int encode_picture(MpegEncContext *s, int picture_number)
     return 0;
 }
 
-void  denoise_dct_c(MpegEncContext *s, DCTELEM *block){
+static void denoise_dct_c(MpegEncContext *s, DCTELEM *block){
     const int intra= s->mb_intra;
     int i;
 
@@ -3008,7 +3008,7 @@ void  denoise_dct_c(MpegEncContext *s, DCTELEM *block){
     }
 }
 
-int dct_quantize_trellis_c(MpegEncContext *s,
+static int dct_quantize_trellis_c(MpegEncContext *s,
                                   DCTELEM *block, int n,
                                   int qscale, int *overflow){
     const int *qmat;