Unreference c->cache in dav1d_flush()

Fix memory leaks. The 'Dav1dThreadPicture cache' member was added to
struct Dav1dContext in commit f9844476372719fd1acc2a6dec51ca65fa74bbcf.
But it is not unreferenced in dav1d_flush() or dav1d_close().

James Almer pointed out that we should unreference c->out too in
dav1d_flush().

1 files changed, 6 insertions, 0 deletions

diff --git a/src/lib.c b/src/lib.c
index 5a61d19..010c77f 100644
--- a/src/lib.c
+++ b/src/lib.c
@@ -517,6 +517,12 @@ int dav1d_apply_grain(Dav1dContext *const c, Dav1dPicture *const out,
 
 void dav1d_flush(Dav1dContext *const c) {
     dav1d_data_unref_internal(&c->in);
+    if (c->out.p.data[0]) {
+        dav1d_thread_picture_unref(&c->out);
+    }
+    if (c->cache.p.data[0]) {
+        dav1d_thread_picture_unref(&c->cache);
+    }
     c->drain = 0;
 
     for (int i = 0; i < 8; i++) {