avcodec/pngenc: Use ff_deflate_init/end() wrappers

They return nicer error messages.

Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>

1 files changed, 0 insertions, 10 deletions

diff --git a/libavcodec/png.c b/libavcodec/png.c
index e772eaad26..34f649815a 100644
--- a/libavcodec/png.c
+++ b/libavcodec/png.c
@@ -38,16 +38,6 @@ static const uint8_t ff_png_pass_xshift[NB_PASSES] = {
     3, 3, 2, 2, 1, 1, 0
 };
 
-void *ff_png_zalloc(void *opaque, unsigned int items, unsigned int size)
-{
-    return av_calloc(items, size);
-}
-
-void ff_png_zfree(void *opaque, void *ptr)
-{
-    av_free(ptr);
-}
-
 int ff_png_get_nb_channels(int color_type)
 {
     int channels;