Bug fix: check for wkt!=None in ocitysmap2/__init__.py:_get_geographic_info()
Bug fix: check for wkt!=None in ocitysmap2/__init__.py:_get_geographic_info()

In ocitysmap2/__init__.py:_get_geographic_info(), when one is looking in
the database, the returned "records" can be "[(None,)]". In that case
wkt obtains value None, which breaks the "shapely.wkt.loads(wkt)" call.
We add a protection against that.

Signed-off-by: David MENTRE <3a08307e8fc56a7279f7b4cd8bf477f84433a928@linux-france.org>

maposmatic/ocitysmap,maposmatic/ocitysmap,maposmatic/ocitysmap