fix: url can be empty ?

androidApp/src/main/java/bou/amine/apps/readerforselfossv2/android/fragments/ArticleFragment.kt

@@ -75,7 +75,7 @@ class ArticleFragment :
     private var colorSurface: Int = 0
     private var fontSize: Int = DEFAULT_FONT_SIZE
     private lateinit var item: SelfossModel.Item
-    private lateinit var url: String
+    private var url: String? = null
     private lateinit var contentText: String
     private lateinit var contentSource: String
     private lateinit var contentImage: String
@@ -168,8 +168,8 @@ class ArticleFragment :
 
     private fun handleContent() {
         if (contentText.isEmptyOrNullOrNullString()) {
-            if (repository.isNetworkAvailable()) {
-                getContentFromMercury()
+            if (repository.isNetworkAvailable() && url.isUrlValid()) {
+                getContentFromMercury(url!!)
             }
         } else {
             binding.titleView.text = contentTitle
@@ -271,7 +271,7 @@ class ArticleFragment :
     }
 
     @Suppress("detekt:SwallowedException")
-    private fun getContentFromMercury() {
+    private fun getContentFromMercury(url: String) {
         binding.progressBar.visibility = View.VISIBLE
 
         CoroutineScope(Dispatchers.Main).launch {
@@ -424,10 +424,10 @@ class ArticleFragment :
 
         var baseUrl: String? = null
         try {
-            val itemUrl = URL(url)
+            val itemUrl = URL(url.orEmpty())
             baseUrl = itemUrl.protocol + "://" + itemUrl.host
         } catch (e: MalformedURLException) {
-            e.sendSilentlyWithAcraWithName("htmlToWebview > $url")
+            e.sendSilentlyWithAcraWithName("htmlToWebview > ${url.orEmpty()}")
         }
 
         val fontName: String =