fix memory leak from shared ptr

Author: maheshrkumar

src/gstreamer/gstkvssink.cpp

@@ -814,6 +814,10 @@ gst_kvs_sink_finalize(GObject *object) {
     if (data->kinesis_video_producer) {
         data->kinesis_video_producer.reset();
     }
+    
+    // Reset the shared pointer to properly release the KvsSinkCustomData
+    kvssink->data.reset();
+ 
     G_OBJECT_CLASS (parent_class)->finalize(object);
 }