fixed pipe consuming bug when using chanIsAvail (#7878), also moved a debug log to the very begining of misdn_hangup.

git-svn-id: https://origsvn.digium.com/svn/asterisk/branches/1.2@42110 65c4cc65-6c06-0410-ace0-fbb531ad65f3

channels/chan_misdn.c

@@ -1952,9 +1952,9 @@ static int misdn_hangup(struct ast_channel *ast)
 	struct chan_list *p;
 	struct misdn_bchannel *bc=NULL;
 	
-	if (!ast || ! (p=MISDN_ASTERISK_TECH_PVT(ast) ) ) return -1;
-	
 	ast_log(LOG_DEBUG, "misdn_hangup(%s)\n", ast->name);
+
+	if (!ast || ! (p=MISDN_ASTERISK_TECH_PVT(ast) ) ) return -1;
 	
 	if (!p) {
 		chan_misdn_log(3, 0, "misdn_hangup called, without chan_list obj.\n");
@@ -1976,11 +1976,15 @@ static int misdn_hangup(struct ast_channel *ast)
 	
 	if (ast->_state == AST_STATE_RESERVED) {
 		/* between request and call */
+		ast_log(LOG_DEBUG, "State Reserved => chanIsAvail\n");
 		MISDN_ASTERISK_TECH_PVT(ast)=NULL;
 		
 		cl_dequeue_chan(&cl_te, p);
-		free(p);
 		
+		close(p->pipe[0]);
+		close(p->pipe[1]);
+		
+		free(p);
 		if (bc)
 			misdn_lib_release(bc);