kernel: don't use mutable as default value in function defintion.

bzr revid: ced-824ee7e22dca5a4b4f2d8d5095aa20650f5a2469

1 files changed, 3 insertions, 1 deletions

diff --git a/bin/sql_db.py b/bin/sql_db.py
index ff1fd63ea00..3b426b2c16c 100644
--- a/bin/sql_db.py
+++ b/bin/sql_db.py
@@ -80,7 +80,9 @@ class fake_cursor:
 		fake_cursor.nbr += 1
 		return self.obj.execute(*args)
 
-	def execute(self, sql, params=()):
+	def execute(self, sql, params=None):
+		if not params:
+			params=()
 		def base_string(s):
 			if isinstance(s, unicode):
 				return s.encode('utf-8')