Apply 'cold' attribute to init/uninit functions in libavcodec

Originally committed as revision 12525 to svn://svn.ffmpeg.org/ffmpeg/trunk
diff --git a/libavcodec/8bps.c b/libavcodec/8bps.c
index 2388345..57c4ec1 100644
--- a/libavcodec/8bps.c
+++ b/libavcodec/8bps.c
@@ -148,7 +148,7 @@
  * Init 8BPS decoder
  *
  */
-static int decode_init(AVCodecContext *avctx)
+static av_cold int decode_init(AVCodecContext *avctx)
 {
         EightBpsContext * const c = avctx->priv_data;
 
@@ -208,7 +208,7 @@
  * Uninit 8BPS decoder
  *
  */
-static int decode_end(AVCodecContext *avctx)
+static av_cold int decode_end(AVCodecContext *avctx)
 {
         EightBpsContext * const c = avctx->priv_data;