Fixed local variable cur referenced before assignment

Author: gau1991

ee/core/mysql.py

@@ -48,6 +48,9 @@ def execute(self, statement, errormsg='', log=True):
                           .format(statement))
 
             cur.execute(statement)
+            cur.close()
+            conn.close()
+            
         except Exception as e:
             cur.close()
             conn.close()
@@ -57,8 +60,6 @@ def execute(self, statement, errormsg='', log=True):
             else:
                 Log.error(self, '{0}'.format(errormsg))
 
-        cur.close()
-        conn.close()
 
 #    def __del__(self):
 #        self.cur.close()