v.db.renamecolumn: syntax cosmetics

git-svn-id: https://svn.osgeo.org/grass/grass/trunk@67359 15284696-431f-4ddb-bdfa-cd5b030d7da7

scripts/v.db.renamecolumn/v.db.renamecolumn.py

@@ -97,7 +97,7 @@ def main():
         sql = "UPDATE %s SET %s=%s" % (table, newcol, oldcol)
         grass.write_command('db.execute', input = '-', database = database, driver = driver, stdin = sql)
         grass.run_command('v.db.dropcolumn', map = map, layer = layer, column = oldcol)
-    elif driver in ['mysql']:
+    elif driver == 'mysql':
         if oldcoltype.upper() == "CHARACTER":
             newcoltype = "varchar(%s)" % (oldcollength)
         else: