fixed 'hostname-override' not saving in default config

Author: apyrr

src/main/kotlin/me/apyr/chatemotes/ChatEmotesSettings.kt

@@ -22,7 +22,7 @@ class ChatEmotesSettings(private val plugin: JavaPlugin) {
   fun resourcePackPrompt(): String = config.getString("emote-provider.local.pack.height")!!
   fun resourcePackHeight(): Int = config.getInt("emote-provider.local.pack.height")
   fun resourcePackAscent(): Int = config.getInt("emote-provider.local.pack.ascent")
-  fun hostnameOverride(): String? = config.getString("emote-provider.local.hostname-override")
+  fun hostnameOverride(): String? = config.getString("emote-provider.local.hostname-override")?.ifEmpty { null }
   fun httpPort(): Int = config.getInt("emote-provider.local.http.port")
 
   // remote

src/main/resources/config.yml

@@ -25,7 +25,7 @@ emote-provider:
       ascent: 8
 
     # minecraft server hostname override (set to disable auto detection)
-    hostname-override: null
+    hostname-override: ''
 
     # resource pack server
     http.port: 25765