theora: fix a crash when enctheoraClose is called and pv is NULL.

diff --git a/libhb/enctheora.c b/libhb/enctheora.c
index 390b52177330aa6a822058b346d55b00fce56ce2..00b4d18ebedf7947576c22bb7cc3cced29638256 100644 (file)
--- a/libhb/enctheora.c
+++ b/libhb/enctheora.c
@@ -190,6 +190,11 @@ void enctheoraClose( hb_work_object_t * w )
 {
     hb_work_private_t * pv = w->private_data;
 
+    if (pv == NULL)
+    {
+        return;
+    }
+
     th_encode_free( pv->ctx );
 
     if( pv->file )