Moved {identifier} check to _mqttBackwards

code/espurna/migrate.ino

@@ -962,7 +962,7 @@ void migrate() {
             setSetting("btnRelay", 0, 0);
             setSetting("relayGPIO", 0, 12);
             setSetting("relayType", 0, RELAY_TYPE_NORMAL);
-  
+
           #elif defined(PILOTAK_ESP_DIN_V1)
 
             setSetting("board", 76);
@@ -1013,15 +1013,6 @@ void migrate() {
 
     }
 
-    #if MQTT_SUPPORT
-        // Deprecated MQTT substitution
-        String mqttTopic = getSetting("mqttTopic", MQTT_TOPIC);
-        if (mqttTopic.indexOf("{identifier}") > 0) {
-            mqttTopic.replace("{identifier}", "{hostname}");
-            setSetting("mqttTopic", mqttTopic);
-        }
-    #endif
-
     saveSettings();
 
 }

code/espurna/mqtt.ino

@@ -249,6 +249,14 @@ void _mqttConfigure() {
 
 }
 
+void _mqttBackwards() {
+    String mqttTopic = getSetting("mqttTopic", MQTT_TOPIC);
+    if (mqttTopic.indexOf("{identifier}") > 0) {
+        mqttTopic.replace("{identifier}", "{hostname}");
+        setSetting("mqttTopic", mqttTopic);
+    }
+}
+
 unsigned long _mqttNextMessageId() {
 
     static unsigned long id = 0;
@@ -740,6 +748,8 @@ void mqttReset() {
 
 void mqttSetup() {
 
+    _mqttBackwards();
+    
     DEBUG_MSG_P(PSTR("[MQTT] Async %s, SSL %s, Autoconnect %s\n"),
         MQTT_USE_ASYNC ? "ENABLED" : "DISABLED",
         ASYNC_TCP_SSL_ENABLED ? "ENABLED" : "DISABLED",