watermark added, minor mods to mlt framework required

[melted] / src / framework / mlt_frame.c

diff --git a/src/framework/mlt_frame.c b/src/framework/mlt_frame.c
index 6c367e9..04bc9ba 100644 (file)
--- a/src/framework/mlt_frame.c
+++ b/src/framework/mlt_frame.c
@@ -293,10 +293,13 @@ int mlt_frame_get_audio( mlt_frame this, int16_t **buffer, mlt_audio_format *for
 
 void mlt_frame_close( mlt_frame this )
 {
-       mlt_deque_close( this->stack_get_image );
-       mlt_deque_close( this->stack_frame );
-       mlt_properties_close( &this->parent );
-       free( this );
+       if ( this != NULL )
+       {
+               mlt_deque_close( this->stack_get_image );
+               mlt_deque_close( this->stack_frame );
+               mlt_properties_close( &this->parent );
+               free( this );
+       }
 }
 
 /***** convenience functions *****/