Two fixes to address issues with living proxy and GEDCOM export

svn: r15295

src/gen/proxy/proxybase.py

@@ -306,7 +306,7 @@ class ProxyDbBase(DbReadBase):
         """
         Returns obj if predicate is True or not callable, else returns None
         """
-        if predicate is not None:
+        if predicate is not None and obj is not None:
             return obj if predicate(obj.handle) else None
         return obj
 

src/plugins/export/ExportGedcom.py

@@ -1286,6 +1286,8 @@ class GedcomWriter(UpdateCallback):
             return
 
         src = self.dbase.get_source_from_handle(src_handle)
+        if src is None:
+            return
 
         # Reference to the source
         self.__writeln(level, "SOUR", "@%s@" % src.get_gramps_id())