AP_UAVCAN: compile fix for debug/assertions

libraries/AP_UAVCAN/AP_UAVCAN.cpp

@@ -182,6 +182,8 @@ bool AP_UAVCAN::add_interface(AP_HAL::CANIface* can_iface) {
     return true;
 }
 
+#pragma GCC diagnostic push
+#pragma GCC diagnostic error "-Wframe-larger-than=1400"
 void AP_UAVCAN::init(uint8_t driver_index, bool enable_filters)
 {
     _driver_index = driver_index;
@@ -338,6 +340,7 @@ void AP_UAVCAN::init(uint8_t driver_index, bool enable_filters)
     _initialized = true;
     debug_uavcan(AP_CANManager::LOG_INFO, "UAVCAN: init done\n\r");
 }
+#pragma GCC diagnostic pop
 
 // send ESC telemetry messages over MAVLink
 void AP_UAVCAN::send_esc_telemetry_mavlink(uint8_t mav_chan)