Fix build error in gstlal_smoothkappas.c

gst/lal/gstlal_smoothkappas.c

@@ -891,7 +891,7 @@ static void set_property(GObject *object, enum property prop_id, const GValue *v
 	case ARG_CLEAR_ON_GAP:
 		element->clear_on_gap = g_value_get_boolean(value);
 		break;
-	case ARG_RESET_TIME:
+	case ARG_RESET_TIME: ;
 		guint64 old_reset_time, new_reset_time = g_value_get_uint64(value);
 		guint i = 0;
 		/* Only store nonzero reset times that we don't already have */