Address minor Kotlin compiler warnings

app/src/main/java/eu/kanade/tachiyomi/ui/reader/ReaderActivity.kt

@@ -119,8 +119,8 @@ class ReaderActivity : BaseRxActivity<ReaderPresenter>() {
         setContentView(R.layout.reader_activity)
 
         if (presenter.needsInit()) {
-            val manga = intent.extras.getLong("manga", -1)
-            val chapter = intent.extras.getLong("chapter", -1)
+            val manga = intent.extras!!.getLong("manga", -1)
+            val chapter = intent.extras!!.getLong("chapter", -1)
 
             if (manga == -1L || chapter == -1L) {
                 finish()

app/src/main/java/eu/kanade/tachiyomi/ui/reader/ReaderPresenter.kt

@@ -498,7 +498,7 @@ class ReaderPresenter(
                 .observeOn(AndroidSchedulers.mainThread())
                 .subscribeFirst(
                         { view, file -> view.onShareImageResult(file) },
-                        { view, error -> /* Empty */ }
+                        { _, _ -> /* Empty */ }
                 )
     }
 

app/src/main/java/eu/kanade/tachiyomi/ui/reader/loader/DownloadPageLoader.kt

@@ -32,9 +32,9 @@ class DownloadPageLoader(
         return downloadManager.buildPageList(source, manga, chapter.chapter)
             .map { pages ->
                 pages.map { page ->
-                    ReaderPage(page.index, page.url, page.imageUrl, {
+                    ReaderPage(page.index, page.url, page.imageUrl) {
                         context.contentResolver.openInputStream(page.uri)
-                    }).apply {
+                    }.apply {
                         status = Page.READY
                     }
                 }