Index: libhb/encx264.c
===================================================================
--- libhb/encx264.c	(revision 1620)
+++ libhb/encx264.c	(working copy)
@@ -566,6 +566,8 @@
     hb_work_private_t *pv = w->private_data;
     hb_buffer_t *in = *buf_in;
 
+    *buf_out = NULL;
+
     if( in->size <= 0 )
     {
         // EOF on input. Flush any frames still in the decoder then