Merged revisions 155264 via svnmerge from

https://origsvn.digium.com/svn/asterisk/trunk

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r155264 | russell | 2008-11-07 09:42:04 -0600 (Fri, 07 Nov 2008) | 3 lines

Remove a bogus ast_free() that Kevin noticed.  This was probably just left over 
from pre-astobj2ified chan_sip.

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git-svn-id: https://origsvn.digium.com/svn/asterisk/branches/1.6.1@155272 65c4cc65-6c06-0410-ace0-fbb531ad65f3

channels/chan_sip.c

@@ -6042,7 +6042,6 @@ static struct sip_pvt *sip_alloc(ast_string_field callid, struct sockaddr_in *si
 
 	if (ast_string_field_init(p, 512)) {
 		ao2_t_ref(p, -1, "failed to string_field_init, drop p");
-		ast_free(p);
 		return NULL;
 	}