Fix openUrl

Author: KyuubiRan

app/src/main/java/me/kyuubiran/akinatorhelper/util/Utils.kt

@@ -1,9 +1,9 @@
 package me.kyuubiran.akinatorhelper.util
 
+import android.content.Context
 import android.content.Intent
 import android.net.Uri
-import com.github.kyuubiran.ezxhelper.init.InitFields.appContext
 
-fun openUrl(url: String) {
-    appContext.startActivity(Intent(Intent.ACTION_VIEW, Uri.parse(url)))
+fun Context.openUrl(url: String) {
+    this.startActivity(Intent(Intent.ACTION_VIEW, Uri.parse(url)))
 }

app/src/main/java/me/kyuubiran/akinatorhelper/view/SettingDialog.kt

@@ -152,7 +152,7 @@ class SettingDialog(activity: Activity) : AlertDialog.Builder(activity) {
                     )
                 }
                 "goto_github" -> {
-                    openUrl("https://github.com/KyuubiRan/AkinatorHelper")
+                    this.activity.openUrl("https://github.com/KyuubiRan/AkinatorHelper")
                 }
             }
             return true