Merged revisions 319528 via svnmerge from

https://origsvn.digium.com/svn/asterisk/branches/1.6.2

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  r319528 | twilson | 2011-05-18 13:02:06 -0700 (Wed, 18 May 2011) | 17 lines
  
  Merged revisions 319527 via svnmerge from 
  https://origsvn.digium.com/svn/asterisk/branches/1.4
  
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    r319527 | twilson | 2011-05-18 12:56:08 -0700 (Wed, 18 May 2011) | 10 lines
    
    Fix app_dial ring groups
    
    Revert part of r315643. We need to remove the datastore here as well.
    The code in bridging code will catch anything that app_dial might miss.
    
    (closes issue #19311)
    Reported by: mspuhler
    Patches: 
          issue_19311_no_answer.diff uploaded by elguero (license 37)
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git-svn-id: https://origsvn.digium.com/svn/asterisk/branches/1.8@319529 65c4cc65-6c06-0410-ace0-fbb531ad65f3

apps/app_dial.c

@@ -2395,6 +2395,17 @@ static int dial_exec_full(struct ast_channel *chan, const char *data, struct ast
 	peer = wait_for_answer(chan, outgoing, &to, peerflags, opt_args, &pa, &num, &result,
 		dtmf_progress, ignore_cc, &forced_clid, &stored_clid);
 
+	/* The ast_channel_datastore_remove() function could fail here if the
+	 * datastore was moved to another channel during a masquerade. If this is
+	 * the case, don't free the datastore here because later, when the channel
+	 * to which the datastore was moved hangs up, it will attempt to free this
+	 * datastore again, causing a crash
+	 */
+	ast_channel_lock(chan);
+	if (!ast_channel_datastore_remove(chan, datastore)) {
+		ast_datastore_free(datastore);
+	}
+	ast_channel_unlock(chan);
 	if (!peer) {
 		if (result) {
 			res = result;