fix StackOverflow in withProgressDialog

Author: akirasosa

app/src/main/kotlin/com/hana053/micropost/pages/Presenter.kt

@@ -15,20 +15,20 @@ interface Presenter<out T : ViewWrapper> {
     fun bind()
 
     fun <T> Observable<T>.withProgressDialog(): Observable<T> = Observable.using({
-        ProgressBar(view.context(), null, android.R.attr.progressBarStyle).apply {
+        val progressBar = ProgressBar(view.content.context, null, android.R.attr.progressBarStyle).apply {
             isIndeterminate = true
             visibility = View.VISIBLE
-
-            val rl = RelativeLayout(view.content.context).apply {
-                gravity = Gravity.CENTER
-                addView(this@apply)
-            }
-            val layoutParams = RelativeLayout.LayoutParams(
-                RelativeLayout.LayoutParams.MATCH_PARENT,
-                RelativeLayout.LayoutParams.MATCH_PARENT
-            )
-            view.content.addView(rl, layoutParams)
         }
+        val rl = RelativeLayout(view.content.context).apply {
+            gravity = Gravity.CENTER
+            addView(progressBar)
+        }
+        val layoutParams = RelativeLayout.LayoutParams(
+            RelativeLayout.LayoutParams.MATCH_PARENT,
+            RelativeLayout.LayoutParams.MATCH_PARENT
+        )
+        view.content.addView(rl, layoutParams)
+        progressBar
     }, { this }, {
         it.visibility = View.GONE
     })