h264dec: make ff_h264_decode_init() static

It is not called from outside h264dec.c anymore.

libavcodec/h264dec.c

@@ -361,7 +361,7 @@ static av_cold int h264_decode_end(AVCodecContext *avctx)
 
 static AVOnce h264_vlc_init = AV_ONCE_INIT;
 
-av_cold int ff_h264_decode_init(AVCodecContext *avctx)
+static av_cold int h264_decode_init(AVCodecContext *avctx)
 {
     H264Context *h = avctx->priv_data;
     int ret;
@@ -795,7 +795,7 @@ AVCodec ff_h264_decoder = {
     .type                  = AVMEDIA_TYPE_VIDEO,
     .id                    = AV_CODEC_ID_H264,
     .priv_data_size        = sizeof(H264Context),
-    .init                  = ff_h264_decode_init,
+    .init                  = h264_decode_init,
     .close                 = h264_decode_end,
     .decode                = h264_decode_frame,
     .capabilities          = /*AV_CODEC_CAP_DRAW_HORIZ_BAND |*/ AV_CODEC_CAP_DR1 |

libavcodec/h264dec.h

@@ -553,7 +553,6 @@ int ff_h264_decode_ref_pic_marking(H264SliceContext *sl, GetBitContext *gb,
                                    const H2645NAL *nal, void *logctx);
 
 void ff_h264_hl_decode_mb(const H264Context *h, H264SliceContext *sl);
-int ff_h264_decode_init(AVCodecContext *avctx);
 void ff_h264_decode_init_vlc(void);
 
 /**