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send-email: fix uninitialized var warning for $smtp_auth 

On the latest version of git-send-email, I see this error just before
running SMTP auth (I didn't provide any --smtp-auth= parameter):

  Use of uninitialized value $smtp_auth in pattern match (m//) at \
  /home/briannorris/git/git/git-send-email.perl line 1139.

Signed-off-by: Brian Norris <computersforpeace@gmail.com>
Reviewed-by: Eric Sunshine <sunshine@sunshineco.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Brian Norris 2015-09-18 15:12:50 -07:00 committed by Junio C Hamano
parent 0f2e68b54c
commit 904f6e7c15
1 changed files with 1 additions and 1 deletions
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git-send-email.perl
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@ -1142,7 +1142,7 @@ sub smtp_auth_maybe {
# Check mechanism naming as defined in:
# https://tools.ietf.org/html/rfc4422#page-8
if ($smtp_auth !~ /^(\b[A-Z0-9-_]{1,20}\s*)*$/) {
if ($smtp_auth && $smtp_auth !~ /^(\b[A-Z0-9-_]{1,20}\s*)*$/) {
die "invalid smtp auth: '${smtp_auth}'";
}