Fix skiping typos

Found-by: Alessandro Ghedini <alessandro@ghedini.me>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

libavcodec/flacdec.c

@@ -512,12 +512,12 @@ static int flac_decode_frame(AVCodecContext *avctx, void *data,
     }
 
     if (buf_size > 5 && !memcmp(buf, "\177FLAC", 5)) {
-        av_log(s->avctx, AV_LOG_DEBUG, "skiping flac header packet 1\n");
+        av_log(s->avctx, AV_LOG_DEBUG, "skipping flac header packet 1\n");
         return buf_size;
     }
 
     if (buf_size > 0 && (*buf & 0x7F) == FLAC_METADATA_TYPE_VORBIS_COMMENT) {
-        av_log(s->avctx, AV_LOG_DEBUG, "skiping vorbis comment\n");
+        av_log(s->avctx, AV_LOG_DEBUG, "skipping vorbis comment\n");
         return buf_size;
     }
 

libavcodec/vc1dec.c

@@ -5997,7 +5997,7 @@ static int vc1_decode_frame(AVCodecContext *avctx, void *data,
 
     /* skip B-frames if we don't have reference frames */
     if (s->last_picture_ptr == NULL && (s->pict_type == AV_PICTURE_TYPE_B || s->droppable)) {
-        av_log(v->s.avctx, AV_LOG_DEBUG, "Skiping B frame without reference frames\n");
+        av_log(v->s.avctx, AV_LOG_DEBUG, "Skipping B frame without reference frames\n");
         goto end;
     }
     if ((avctx->skip_frame >= AVDISCARD_NONREF && s->pict_type == AV_PICTURE_TYPE_B) ||

libavformat/avidec.c

@@ -1160,7 +1160,7 @@ start_sync:
             ast = st->priv_data;
 
             if (!ast) {
-                av_log(s, AV_LOG_WARNING, "Skiping foreign stream %d packet\n", n);
+                av_log(s, AV_LOG_WARNING, "Skipping foreign stream %d packet\n", n);
                 continue;
             }
 

libavformat/flvdec.c

@@ -296,7 +296,7 @@ static int parse_keyframes_index(AVFormatContext *s, AVIOContext *ioc,
     int64_t initial_pos    = avio_tell(ioc);
 
     if (vstream->nb_index_entries>0) {
-        av_log(s, AV_LOG_WARNING, "Skiping duplicate index\n");
+        av_log(s, AV_LOG_WARNING, "Skipping duplicate index\n");
         return 0;
     }