error fixed in sales browser control

setup/doctype/sales_browser_control/sales_browser_control.py

@@ -131,7 +131,7 @@ class DocType:
 
     r = eval(args)
     
-    if r['lft'] == 0:
+    if r['lft'] == 0 and r['action'] != 'Create':
       n = sql("select lft,rgt from `tab%s` where name = '%s'"%(r['node_title'],r['nm']))
       r['lft'] = n[0][0]
       r['rgt'] = n[0][1]
@@ -212,4 +212,4 @@ class DocType:
     if res:
       msgprint("'%s' record is already exist."%(r['nm']))
       return 'true'
-    return 'false'      
+    return 'false'