missed a spot on last conf commit

src/switch_core_io.c

@@ -79,6 +79,12 @@ SWITCH_DECLARE(switch_status_t) switch_core_session_read_video_frame(switch_core
 		}
 	}
 
+	if (status == SWITCH_STATUS_INUSE) {
+		*frame = &runtime.dummy_cng_frame;
+		switch_yield(20000);
+		return SWITCH_STATUS_SUCCESS;
+	}
+
 	if (status != SWITCH_STATUS_SUCCESS) {
 		goto done;
 	}