Fix documentation for ast_softhangup() and correct the misuse thereof.

(closes issue #16103)
 Reported by: majorbloodnok


git-svn-id: https://origsvn.digium.com/svn/asterisk/branches/1.4@225105 65c4cc65-6c06-0410-ace0-fbb531ad65f3

apps/app_meetme.c

@@ -3919,7 +3919,7 @@ static void sla_handle_hold_event(struct sla_event *event)
 		ast_indicate(event->trunk_ref->trunk->chan, AST_CONTROL_HOLD);
 	}
 
-	ast_softhangup(event->trunk_ref->chan, AST_CAUSE_NORMAL);
+	ast_softhangup(event->trunk_ref->chan, AST_SOFTHANGUP_DEV);
 	event->trunk_ref->chan = NULL;
 }
 

include/asterisk/channel.h

@@ -774,14 +774,14 @@ int ast_hangup(struct ast_channel *chan);
  * \param chan channel to be soft-hung-up
  * Call the protocol layer, but don't destroy the channel structure (use this if you are trying to
  * safely hangup a channel managed by another thread.
- * \param cause	Ast hangupcause for hangup
+ * \param reason an AST_SOFTHANGUP_* reason code
  * \return Returns 0 regardless
  */
 int ast_softhangup(struct ast_channel *chan, int cause);
 
 /*! \brief Softly hangup up a channel (no channel lock) 
  * \param chan channel to be soft-hung-up
- * \param cause	Ast hangupcause for hangup (see cause.h) */
+ * \param reason an AST_SOFTHANGUP_* reason code */
 int ast_softhangup_nolock(struct ast_channel *chan, int cause);
 
 /*! \brief Check to see if a channel is needing hang up 

main/pbx.c

@@ -2504,8 +2504,9 @@ static int __ast_pbx_run(struct ast_channel *c)
 	}
 	if (!found && !error)
 		ast_log(LOG_WARNING, "Don't know what to do with '%s'\n", c->name);
-	if (res != AST_PBX_KEEPALIVE)
-		ast_softhangup(c, c->hangupcause ? c->hangupcause : AST_CAUSE_NORMAL_CLEARING);
+	if (res != AST_PBX_KEEPALIVE) {
+		ast_softhangup(c, AST_SOFTHANGUP_APPUNLOAD);
+	}
 	ast_channel_lock(c);
 	if ((emc = pbx_builtin_getvar_helper(c, "EXIT_MACRO_CONTEXT"))) {
 		emc = ast_strdupa(emc);