in util.py/testXMLValue, val.text.strip() throws an error on empty Element

[ochriste]

for example,
< Abstract />

Traceback (most recent call last):
File "/home/admin/morges/buildout/eggs/c2cgeoportal-1.2-py2.6.egg/c2cgeoportal/views/entry.py", line 37, in _wms_getcap
wms = WebMapService(url, version='1.1.1')
File "/home/admin/morges/OWSLib/owslib/wms.py", line 86, in init
self._buildMetadata(parse_remote_metadata)
File "/home/admin/morges/OWSLib/owslib/wms.py", line 126, in _buildMetadata
gather_layers(caps, None)
File "/home/admin/morges/OWSLib/owslib/wms.py", line 120, in gather_layers
cm = ContentMetadata(elem, parent=parent_metadata, index=index+1, parse_remote_metadata=parse_remote_metadata)
File "/home/admin/morges/OWSLib/owslib/wms.py", line 489, in init
self.layers.append(ContentMetadata(child, self))
File "/home/admin/morges/OWSLib/owslib/wms.py", line 340, in init
self.abstract = testXMLValue(elem.find('Abstract'))
File "/home/admin/morges/OWSLib/owslib/util.py", line 148, in testXMLValue
return val.text.strip()
[Fri Dec 07 12:18:50 2012] [error] AttributeError: 'NoneType' object has no attribute 'strip'

[tomkralidis]

Thanks @ochriste