[Minor] Fixed Patches

frappe/patches.txt

@@ -20,6 +20,7 @@ execute:frappe.reload_doc('custom', 'doctype', 'property_setter') #2014-12-31-1
 execute:frappe.reload_doc('core', 'doctype', 'patch_log') #2016-10-31
 execute:frappe.reload_doctype("File") # 2015-10-19
 execute:frappe.reload_doc('core', 'doctype', 'error_snapshot')
+execute:frappe.clear_cache()
 frappe.patches.v7_1.sync_language_doctype
 frappe.patches.v7_0.rename_bulk_email_to_email_queue
 frappe.patches.v7_1.rename_chinese_language_codes

frappe/patches/v7_1/rename_scheduler_log_to_error_log.py

@@ -3,8 +3,8 @@ import frappe
 def execute():
 	if not 'tabError Log' in frappe.db.get_tables():
 		frappe.rename_doc('DocType', 'Scheduler Log', 'Error Log')
-		frappe.db.commit()
 		frappe.db.sql("""delete from `tabError Log` where datediff(curdate(), creation) > 30""")
+		frappe.db.commit()
 		frappe.db.sql('alter table `tabError Log` change column name name varchar(140)')
 		frappe.db.sql('alter table `tabError Log` change column parent parent varchar(140)')
-		frappe.db.sql('alter table `tabError Log` engine=MyISAM')
+		frappe.db.sql('alter table `tabError Log` engine=MyISAM')