h264: Make ff_h264_decode_end() static, it is not used externally.

Also drop the now unnecessary ff_ prefix from its name.

libavcodec/h264.c

@@ -4559,7 +4559,7 @@ av_cold void ff_h264_free_context(H264Context *h)
         av_freep(h->pps_buffers + i);
 }
 
-av_cold int ff_h264_decode_end(AVCodecContext *avctx)
+static av_cold int h264_decode_end(AVCodecContext *avctx)
 {
     H264Context *h    = avctx->priv_data;
     MpegEncContext *s = &h->s;
@@ -4596,7 +4596,7 @@ AVCodec ff_h264_decoder = {
     .id                    = CODEC_ID_H264,
     .priv_data_size        = sizeof(H264Context),
     .init                  = ff_h264_decode_init,
-    .close                 = ff_h264_decode_end,
+    .close                 = h264_decode_end,
     .decode                = decode_frame,
     .capabilities          = /*CODEC_CAP_DRAW_HORIZ_BAND |*/ CODEC_CAP_DR1 |
                              CODEC_CAP_DELAY | CODEC_CAP_SLICE_THREADS |
@@ -4615,7 +4615,7 @@ AVCodec ff_h264_vdpau_decoder = {
     .id             = CODEC_ID_H264,
     .priv_data_size = sizeof(H264Context),
     .init           = ff_h264_decode_init,
-    .close          = ff_h264_decode_end,
+    .close          = h264_decode_end,
     .decode         = decode_frame,
     .capabilities   = CODEC_CAP_DR1 | CODEC_CAP_DELAY | CODEC_CAP_HWACCEL_VDPAU,
     .flush          = flush_dpb,

libavcodec/h264.h

@@ -663,7 +663,6 @@ void ff_h264_hl_decode_mb(H264Context *h);
 int ff_h264_frame_start(H264Context *h);
 int ff_h264_decode_extradata(H264Context *h);
 av_cold int ff_h264_decode_init(AVCodecContext *avctx);
-av_cold int ff_h264_decode_end(AVCodecContext *avctx);
 av_cold void ff_h264_decode_init_vlc(void);
 
 /**