Corrected Gentle Touch skills (#4420)

* Follow up to 24c4c49.
* Gentle Touch - Convert and Gentle Touch - Revitalize should not be able to be stacked with one another; only Gentle Touch - Energy Gain can stack with them.
Thanks to @teededung!

src/map/status.cpp

@@ -9313,6 +9313,12 @@ int status_change_start(struct block_list* src, struct block_list* bl,enum sc_ty
 	case SC_BANDING:
 		status_change_end(bl, SC_PRESTIGE, INVALID_TIMER);
 		break;
+	case SC_GT_CHANGE:
+		status_change_end(bl, SC_GT_REVITALIZE, INVALID_TIMER);
+		break;
+	case SC_GT_REVITALIZE:
+		status_change_end(bl, SC_GT_CHANGE, INVALID_TIMER);
+		break;
 	case SC_WARMER:
 		status_change_end(bl, SC_CRYSTALIZE, INVALID_TIMER);
 		status_change_end(bl, SC_FREEZING, INVALID_TIMER);