add missing comma

git-svn-id: https://svn.osgeo.org/grass/grass/trunk@38272 15284696-431f-4ddb-bdfa-cd5b030d7da7

scripts/g.extension/g.extension.py

@@ -159,7 +159,7 @@ def install_extension(svnurl, gisbase, module):
                           'MODULE_TOPDIR=%s' % gisbase,
                           'install'])
     except IOError:
-        ret = grass.call(['sudo', 'make'
+        ret = grass.call(['sudo', 'make',
                           'MODULE_TOPDIR=%s' % gisbase,
                           'install'])