Fix root server crash on certain LG Android 8.1 devices

See also: https://github.com/Chainfire/librootjava/issues/20

mobile/src/main/java/be/mygod/vpnhotspot/App.kt

@@ -48,7 +48,7 @@ class App : Application() {
             deviceStorage.moveSharedPreferencesFrom(this, PreferenceManager(this).sharedPreferencesName)
             deviceStorage.moveDatabaseFrom(this, AppDatabase.DB_NAME)
         } else deviceStorage = this
-        Services.init(this)
+        Services.init { this }
 
         // overhead of debug mode is minimal: https://github.com/Kotlin/kotlinx.coroutines/blob/f528898/docs/debugging.md#debug-mode
         System.setProperty(DEBUG_PROPERTY_NAME, DEBUG_PROPERTY_VALUE_ON)

mobile/src/main/java/be/mygod/vpnhotspot/root/RootManager.kt

@@ -29,7 +29,7 @@ object RootManager : RootSession() {
                     }
                 }
             })
-            Services.init(systemContext)
+            Services.init { systemContext }
             return null
         }
     }

mobile/src/main/java/be/mygod/vpnhotspot/util/Services.kt

@@ -11,9 +11,10 @@ import timber.log.Timber
 
 @SuppressLint("LogNotTimber")
 object Services {
-    lateinit var context: Context
-    fun init(context: Context) {
-        this.context = context
+    private lateinit var contextInit: () -> Context
+    val context by lazy { contextInit() }
+    fun init(context: () -> Context) {
+        contextInit = context
     }
 
     val connectivity by lazy { context.getSystemService<ConnectivityManager>()!! }