Fix several invalid reads in tester, and potential crash and use of...

Fix several invalid reads in tester, and potential crash and use of unitialized value in http proxy support.

src/transports/tls_channel.c

@@ -612,8 +612,8 @@ static int tls_process_data(belle_sip_channel_t *obj,unsigned int revents){
 				if (tls_process_handshake(obj)==-1) goto process_error;
 			}
 		} else if (obj->stack->http_proxy_host && !channel->http_proxy_connected) {
-			char response[256];
-			err = stream_channel_recv((belle_sip_stream_channel_t*)obj,response,sizeof(response));
+			char response[256]={0};
+			err = stream_channel_recv((belle_sip_stream_channel_t*)obj,response,sizeof(response)-1);
 			if (err<0 ){
 				belle_sip_error("Channel [%p]: connection refused by http proxy [%s:%i] status [%s]"
 								,channel

tester/belle_sip_register_tester.c

@@ -268,10 +268,11 @@ static void process_auth_requested_for_algorithm(void *user_ctx, belle_sip_auth_
 	}
 }
 
+static const char *listener_user_data[2] = {NULL, NULL};
+
 int register_before_all(void) {
 	belle_sip_listening_point_t *lp;
 	stack = belle_sip_stack_new(NULL);
-	const char *client[2] = {NULL, NULL};
 	
 	belle_sip_tester_set_dns_host_file(stack);
 
@@ -299,7 +300,7 @@ int register_before_all(void) {
 	listener_callbacks.process_auth_requested = process_auth_requested_for_algorithm;
 	listener_callbacks.listener_destroyed = NULL;
 
-	listener = belle_sip_listener_create_from_callbacks(&listener_callbacks, (void *)client);
+	listener = belle_sip_listener_create_from_callbacks(&listener_callbacks, (void *)listener_user_data);
 	return 0;
 }
 

tester/belle_sip_tester.c

@@ -183,7 +183,7 @@ void belle_sip_tester_set_dns_host_file(belle_sip_stack_t *stack){
 	if (userhostsfile){
 		belle_sip_stack_set_dns_user_hosts_file(stack, userhostsfile);
 	}else{
-		char *default_hosts = bc_tester_res("test_hosts");
+		char *default_hosts = bc_tester_res("tester_hosts");
 		if (default_hosts){
 			belle_sip_stack_set_dns_user_hosts_file(stack, default_hosts);
 			bc_free(default_hosts);