Use get instead of get_value

This won't try and do something silly like convert `username=1` to a number.

Author: eric-wieser

git/util.py

@@ -706,7 +706,7 @@ def default_name() -> str:
             except KeyError:
                 if config_reader is not None:
                     try:
-                        val = config_reader.get_value('user', cvar)
+                        val = config_reader.get('user', cvar)
                     except Exception:
                         val = default()
                     setattr(actor, attr, val)