Fix parenthesis in buying controller (#12923)

diff --git a/erpnext/public/js/controllers/buying.js b/erpnext/public/js/controllers/buying.js
index bd3a03d..68bb2b8 100644
--- a/erpnext/public/js/controllers/buying.js
+++ b/erpnext/public/js/controllers/buying.js
@@ -254,10 +254,10 @@
 							cur_frm.doc.items[i].qty = my_qty;
 							
 							frappe.msgprint(__("Assigning {0} to {1} (row {2})", 
-								[d.mr_name, d.item_code, cur_frm.doc.items[i].idx]);
+								[d.mr_name, d.item_code, cur_frm.doc.items[i].idx]));
 							
 							if (qty > 0) {
-								frappe.msgprint(__("Splitting {0} units of {1}", [qty, d.item_code]);
+								frappe.msgprint(__("Splitting {0} units of {1}", [qty, d.item_code]));
 								var newrow = frappe.model.add_child(cur_frm.doc, cur_frm.doc.items[i].doctype, "items");
 								item_length++;