Prevent segfault expanding %F in the MDA string when the reverse path is not specified.

1 files changed, 1 insertions, 1 deletions

diff --git a/local.c b/local.c
index 0937178..494d163 100644
--- a/local.c
+++ b/local.c
@@ -97,7 +97,7 @@ void local_init(message_t *message)
 	/* get From address for %F */
 	if (strstr(before, "%F"))
 	{
-		from = xstrdup(message->reverse_path);
+		from = xstrdup(message->reverse_path ? message->reverse_path : "");
 
 		sanitize(from);