One fewer string

ampel-firmware/wifi_util.cpp

@@ -13,14 +13,14 @@ namespace config {
 }
 
 // Initialize Wi-Fi
-void WiFiConnect(const String &hostname) {
+void WiFiConnect(const char *hostname) {
   //NOTE: WiFi Multi could allow multiple SSID and passwords.
   WiFi.persistent(false); // Don't write user & password to Flash.
   WiFi.mode(WIFI_STA); // Set ESP to be a WiFi-client only
 #if defined(ESP8266)
     WiFi.hostname(hostname);
 #elif defined(ESP32)
-  WiFi.setHostname(hostname.c_str());
+  WiFi.setHostname(hostname);
 #endif
 
   Serial.print(F("WiFi - Connecting to "));

ampel-firmware/wifi_util.h

@@ -5,6 +5,6 @@
 #include "util.h"
 #include "led_effects.h"
 
-void WiFiConnect(const String &hostname);
+void WiFiConnect(const char *hostname);
 
 #endif