Remove a few if (p) av_free(p) forms

Signed-off-by: Mans Rullgard <mans@mansr.com>
(cherry picked from commit 437fb1c8)

libavcodec/dvbsubdec.c

@@ -332,9 +332,7 @@ static void delete_state(DVBSubContext *ctx)
         ctx->region_list = region->next;
 
         delete_region_display_list(ctx, region);
-        if (region->pbuf)
-            av_free(region->pbuf);
-
+        av_free(region->pbuf);
         av_free(region);
     }
 
@@ -1032,8 +1030,7 @@ static void dvbsub_parse_region_segment(AVCodecContext *avctx,
     buf += 2;
 
     if (region->width * region->height != region->buf_size) {
-        if (region->pbuf)
-            av_free(region->pbuf);
+        av_free(region->pbuf);
 
         region->buf_size = region->width * region->height;
 

libavcodec/flashsv.c

@@ -133,8 +133,7 @@ static int flashsv_decode_frame(AVCodecContext *avctx,
     /* the block size could change between frames, make sure the buffer
      * is large enough, if not, get a larger one */
     if(s->block_size < s->block_width*s->block_height) {
-        if (s->tmpblock != NULL)
-            av_free(s->tmpblock);
+        av_free(s->tmpblock);
         if ((s->tmpblock = av_malloc(3*s->block_width*s->block_height)) == NULL) {
             av_log(avctx, AV_LOG_ERROR, "Can't allocate decompression buffer.\n");
             return -1;
@@ -243,8 +242,7 @@ static av_cold int flashsv_decode_end(AVCodecContext *avctx)
         avctx->release_buffer(avctx, &s->frame);
 
     /* free the tmpblock */
-    if (s->tmpblock != NULL)
-        av_free(s->tmpblock);
+    av_free(s->tmpblock);
 
     return 0;
 }

libavcodec/libxvidff.c

@@ -533,12 +533,9 @@ static av_cold int xvid_encode_close(AVCodecContext *avctx) {
         av_free(x->twopassbuffer);
         av_free(x->old_twopassbuffer);
     }
-    if( x->twopassfile != NULL )
-        av_free(x->twopassfile);
-    if( x->intra_matrix != NULL )
-        av_free(x->intra_matrix);
-    if( x->inter_matrix != NULL )
-        av_free(x->inter_matrix);
+    av_free(x->twopassfile);
+    av_free(x->intra_matrix);
+    av_free(x->inter_matrix);
 
     return 0;
 }

libavcodec/mpegaudiodec.c

@@ -2227,8 +2227,7 @@ static av_cold int decode_close_mp3on4(AVCodecContext * avctx)
     int i;
 
     for (i = 0; i < s->frames; i++)
-        if (s->mp3decctx[i])
-            av_free(s->mp3decctx[i]);
+        av_free(s->mp3decctx[i]);
 
     return 0;
 }

libavcodec/smacker.c

@@ -677,12 +677,9 @@ static int smka_decode_frame(AVCodecContext *avctx, void *data, int *data_size,
     for(i = 0; i < 4; i++) {
         if(vlc[i].table)
             free_vlc(&vlc[i]);
-        if(h[i].bits)
-            av_free(h[i].bits);
-        if(h[i].lengths)
-            av_free(h[i].lengths);
-        if(h[i].values)
-            av_free(h[i].values);
+        av_free(h[i].bits);
+        av_free(h[i].lengths);
+        av_free(h[i].values);
     }
 
     *data_size = unp_size;

libavcodec/truemotion2.c

@@ -185,8 +185,7 @@ static int tm2_build_huff_table(TM2Context *ctx, TM2Codes *code)
 
 static void tm2_free_codes(TM2Codes *code)
 {
-    if(code->recode)
-        av_free(code->recode);
+    av_free(code->recode);
     if(code->vlc.table)
         free_vlc(&code->vlc);
 }
@@ -859,13 +858,10 @@ static av_cold int decode_end(AVCodecContext *avctx){
     AVFrame *pic = &l->pic;
     int i;
 
-    if(l->last)
-        av_free(l->last);
-    if(l->clast)
-        av_free(l->clast);
+    av_free(l->last);
+    av_free(l->clast);
     for(i = 0; i < TM2_NUM_STREAMS; i++)
-        if(l->tokens[i])
-            av_free(l->tokens[i]);
+        av_free(l->tokens[i]);
     if(l->Y1){
         av_free(l->Y1);
         av_free(l->U1);

libavcodec/tta.c

@@ -449,8 +449,7 @@ static int tta_decode_frame(AVCodecContext *avctx,
 static av_cold int tta_decode_close(AVCodecContext *avctx) {
     TTAContext *s = avctx->priv_data;
 
-    if (s->decode_buffer)
-        av_free(s->decode_buffer);
+    av_free(s->decode_buffer);
     av_freep(&s->ch_ctx);
 
     return 0;

libavformat/rtpdec_mpeg4.c

@@ -111,8 +111,7 @@ static int parse_fmtp_config(AVCodecContext * codec, char *value)
 {
     /* decode the hexa encoded parameter */
     int len = ff_hex_to_data(NULL, value);
-    if (codec->extradata)
-        av_free(codec->extradata);
+    av_free(codec->extradata);
     codec->extradata = av_mallocz(len + FF_INPUT_BUFFER_PADDING_SIZE);
     if (!codec->extradata)
         return AVERROR(ENOMEM);

libavformat/smacker.c

@@ -334,12 +334,9 @@ static int smacker_read_close(AVFormatContext *s)
     int i;
 
     for(i = 0; i < 7; i++)
-        if(smk->bufs[i])
-            av_free(smk->bufs[i]);
-    if(smk->frm_size)
-        av_free(smk->frm_size);
-    if(smk->frm_flags)
-        av_free(smk->frm_flags);
+        av_free(smk->bufs[i]);
+    av_free(smk->frm_size);
+    av_free(smk->frm_flags);
 
     return 0;
 }