When getting one element set the top to 1, not 2 otherwise we'll get too many results.

Author: eblis

odata/query.py

@@ -296,7 +296,7 @@ def one(self) -> Q:
         """
         oldlimit = self.options.get('$top', None)
 
-        self.options['$top'] = 2
+        self.options['$top'] = 1
         data = self.all()
 
         self.options['$top'] = oldlimit