Merged revisions 80390 via svnmerge from

https://origsvn.digium.com/svn/asterisk/branches/1.4

........
r80390 | russell | 2007-08-22 16:00:44 -0500 (Wed, 22 Aug 2007) | 3 lines

Don't crash when using realtime in chan_sip without an insecure setting in the database.
(closes issue #10348, reported by link55, fixed by me)

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git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@80391 65c4cc65-6c06-0410-ace0-fbb531ad65f3

channels/chan_sip.c

@@ -16841,6 +16841,9 @@ static struct ast_channel *sip_request_call(const char *type, int format, void *
 
 static void set_insecure_flags (struct ast_flags *flags, const char *value, int lineno)
 {
+	if (ast_strlen_zero(value))
+		return;
+
 	if (!ast_false(value)) {
 		char buf[64];
 		char *word, *next;