dovecot-2.2: auth: Potential crashfix

[dovecot at dovecot.org]

details:   http://hg.dovecot.org/dovecot-2.2/rev/f66b0fe68439
changeset: 16924:f66b0fe68439
user:      Timo Sirainen <tss at iki.fi>
date:      Sun Nov 03 21:42:47 2013 +0200
description:
auth: Potential crashfix

diffstat:

 src/auth/auth-request-handler.c |  3 ++-
 1 files changed, 2 insertions(+), 1 deletions(-)

diffs (13 lines):

diff -r 5eae6c491d44 -r f66b0fe68439 src/auth/auth-request-handler.c
--- a/src/auth/auth-request-handler.c	Sun Nov 03 20:56:25 2013 +0200
+++ b/src/auth/auth-request-handler.c	Sun Nov 03 21:42:47 2013 +0200
@@ -173,7 +173,8 @@
 	auth_fields_append(request->extra_fields, dest,
 			   AUTH_FIELD_FLAG_HIDDEN, 0);
 
-	if (strcmp(request->original_username, request->user) != 0) {
+	if (request->original_username != NULL &&
+	    strcmp(request->original_username, request->user) != 0) {
 		auth_str_add_keyvalue(dest, "original_user",
 				      request->original_username);
 	}