Fix compile error when TERMINAL_SUPPORT is disabled (#1426)

code/espurna/ota.ino

@@ -28,7 +28,7 @@ void _otaLoop() {
 // Terminal OTA
 // -----------------------------------------------------------------------------
 
-#if TERMINAL_SUPPORT
+#if TERMINAL_SUPPORT || OTA_MQTT_SUPPORT
 
 #include <ESPAsyncTCP.h>
 AsyncClient * _ota_client;
@@ -186,6 +186,11 @@ void _otaFrom(String url) {
 
 }
 
+#endif // TERMINAL_SUPPORT || OTA_MQTT_SUPPORT
+
+
+#if TERMINAL_SUPPORT
+
 void _otaInitCommands() {
 
     settingsRegisterCommand(F("OTA"), [](Embedis* e) {