Revert "fix: process allocation expiry"

This reverts commit b654dc0e288e3ecfdfbd0831c3ae15cc7036bb90.
diff --git a/erpnext/hr/doctype/leave_ledger_entry/leave_ledger_entry.py b/erpnext/hr/doctype/leave_ledger_entry/leave_ledger_entry.py
index 228e226..c82114e 100644
--- a/erpnext/hr/doctype/leave_ledger_entry/leave_ledger_entry.py
+++ b/erpnext/hr/doctype/leave_ledger_entry/leave_ledger_entry.py
@@ -95,28 +95,29 @@
 			'expire_carry_forwarded_leaves_after_days': (">", 0)
 		}, fieldname=['name'])
 
-	leave_type = [record[0] for record in leave_type_records]
+	if leave_type_records:
+		leave_type = [record[0] for record in leave_type_records]
 
-	expired_allocation = frappe.db.sql_list("""SELECT name
-		FROM `tabLeave Ledger Entry`
-		WHERE
-			`transaction_type`='Leave Allocation'
-			AND `is_expired`=1""")
+		expired_allocation = frappe.db.sql_list("""SELECT name
+			FROM `tabLeave Ledger Entry`
+			WHERE
+				`transaction_type`='Leave Allocation'
+				AND `is_expired`=1""")
 
-	expire_allocation = frappe.get_all("Leave Ledger Entry",
-		fields=['leaves', 'to_date', 'employee', 'leave_type', 'is_carry_forward', 'transaction_name as name', 'transaction_type'],
-		filters={
-			'to_date': ("<", today()),
-			'transaction_type': 'Leave Allocation',
-			'transaction_name': ('not in', expired_allocation)
-		},
-		or_filters={
-			'is_carry_forward': 0,
-			'leave_type': ('in', leave_type)
-		})
+		expire_allocation = frappe.get_all("Leave Ledger Entry",
+			fields=['leaves', 'to_date', 'employee', 'leave_type', 'is_carry_forward', 'transaction_name as name', 'transaction_type'],
+			filters={
+				'to_date': ("<", today()),
+				'transaction_type': 'Leave Allocation',
+				'transaction_name': ('not in', expired_allocation)
+			},
+			or_filters={
+				'is_carry_forward': 0,
+				'leave_type': ('in', leave_type)
+			})
 
 	if expire_allocation:
-			create_expiry_ledger_entry(expire_allocation)
+		create_expiry_ledger_entry(expire_allocation)
 
 def create_expiry_ledger_entry(allocations):
 	''' Create ledger entry for expired allocation '''