learn: fix uninitialized variable

Oops :x

1 files changed, 1 insertions, 0 deletions

diff --git a/t/mda.t b/t/mda.t
index 32154bdc..886b4cb9 100644
--- a/t/mda.t
+++ b/t/mda.t
@@ -187,6 +187,7 @@ EOF
                 # now train it
                 local $ENV{GIT_AUTHOR_EMAIL} = 'trainer@example.com';
                 local $ENV{GIT_COMMITTER_EMAIL} = 'trainer@example.com';
+                local $ENV{GIT_COMMITTER_NAME} = undef;
                 IPC::Run::run([$learn, "spam"], \$msg);
                 is($?, 0, "no failure from learning spam");
                 IPC::Run::run([$learn, "spam"], \$msg);