avcodec/mjpegdec: Fix memleak upon init failure

This affected all decoders that used ff_mjpeg_decode_init() as init
function; and it also affected decoders that open jpeg decoders via
ff_codec_open2_recursive() as well as MxPEG.

Reviewed-by: Anton Khirnov <anton@khirnov.net>
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@gmail.com>

libavcodec/jpeglsdec.c

@@ -553,5 +553,5 @@ AVCodec ff_jpegls_decoder = {
     .close          = ff_mjpeg_decode_end,
     .decode         = ff_mjpeg_decode_frame,
     .capabilities   = AV_CODEC_CAP_DR1,
-    .caps_internal  = FF_CODEC_CAP_INIT_THREADSAFE,
+    .caps_internal  = FF_CODEC_CAP_INIT_THREADSAFE | FF_CODEC_CAP_INIT_CLEANUP,
 };

libavcodec/mjpegbdec.c

@@ -163,5 +163,5 @@ AVCodec ff_mjpegb_decoder = {
     .decode         = mjpegb_decode_frame,
     .capabilities   = AV_CODEC_CAP_DR1,
     .max_lowres     = 3,
-    .caps_internal  = FF_CODEC_CAP_INIT_THREADSAFE,
+    .caps_internal  = FF_CODEC_CAP_INIT_THREADSAFE | FF_CODEC_CAP_INIT_CLEANUP,
 };

libavcodec/mjpegdec.c

@@ -2888,7 +2888,7 @@ AVCodec ff_mjpeg_decoder = {
     .max_lowres     = 3,
     .priv_class     = &mjpegdec_class,
     .profiles       = NULL_IF_CONFIG_SMALL(ff_mjpeg_profiles),
-    .caps_internal  = FF_CODEC_CAP_INIT_THREADSAFE |
+    .caps_internal  = FF_CODEC_CAP_INIT_THREADSAFE | FF_CODEC_CAP_INIT_CLEANUP |
                       FF_CODEC_CAP_SKIP_FRAME_FILL_PARAM,
     .hw_configs     = (const AVCodecHWConfigInternal*[]) {
 #if CONFIG_MJPEG_NVDEC_HWACCEL
@@ -2914,6 +2914,6 @@ AVCodec ff_thp_decoder = {
     .flush          = decode_flush,
     .capabilities   = AV_CODEC_CAP_DR1,
     .max_lowres     = 3,
-    .caps_internal  = FF_CODEC_CAP_INIT_THREADSAFE,
+    .caps_internal  = FF_CODEC_CAP_INIT_THREADSAFE | FF_CODEC_CAP_INIT_CLEANUP,
 };
 #endif

libavcodec/sp5xdec.c

@@ -106,7 +106,7 @@ AVCodec ff_sp5x_decoder = {
     .decode         = sp5x_decode_frame,
     .capabilities   = AV_CODEC_CAP_DR1,
     .max_lowres     = 3,
-    .caps_internal  = FF_CODEC_CAP_INIT_THREADSAFE,
+    .caps_internal  = FF_CODEC_CAP_INIT_THREADSAFE | FF_CODEC_CAP_INIT_CLEANUP,
 };
 #endif
 #if CONFIG_AMV_DECODER
@@ -121,6 +121,6 @@ AVCodec ff_amv_decoder = {
     .decode         = sp5x_decode_frame,
     .max_lowres     = 3,
     .capabilities   = AV_CODEC_CAP_DR1,
-    .caps_internal  = FF_CODEC_CAP_INIT_THREADSAFE,
+    .caps_internal  = FF_CODEC_CAP_INIT_THREADSAFE | FF_CODEC_CAP_INIT_CLEANUP,
 };
 #endif