Dilar: fix NPE during extension loading (#2227)

src/ar/dilar/build.gradle

@@ -2,7 +2,7 @@ ext {
     extName = 'Dilar'
     extClass = '.Dilar'
     themePkg = 'gmanga'
-    overrideVersionCode = 1
+    overrideVersionCode = 2
 }
 
 apply from: "$rootDir/common.gradle"

src/ar/dilar/src/eu/kanade/tachiyomi/extension/ar/dilar/Dilar.kt

@@ -61,10 +61,11 @@ class Dilar :
         else -> preferences.getString(MIRROR_PREF_KEY, MIRROR_PREF_DEFAULT_VALUE)!!
     }
 
-    override val baseUrl = mirrorPref()
+    override val baseUrl by lazy { mirrorPref() }
 
-    private val preferences: SharedPreferences =
+    override val cdnUrl by lazy { baseUrl }
+
+    private val preferences: SharedPreferences by lazy {
         Injekt.get<Application>().getSharedPreferences("source_$id", 0x0000)
-
-    override val cdnUrl = baseUrl
+    }
 }