Fix some crashes

(cherry picked from commit 46efd4c13430881d8593d4fc3cb899dfd3deacdd)

# Conflicts:
#	app/src/main/java/eu/kanade/presentation/webview/WebViewScreenContent.kt
#	app/src/main/java/eu/kanade/tachiyomi/ui/reader/viewer/webtoon/WebtoonPageHolder.kt

core/src/main/java/tachiyomi/core/util/system/ImageUtil.kt

@@ -403,9 +403,8 @@ object ImageUtil {
                 "splitHeight=${splitData.splitHeight} bottomOffset=${splitData.bottomOffset}"
         }
 
-        val region = Rect(0, splitData.topOffset, splitData.splitWidth, splitData.bottomOffset)
-
         try {
+            val region = Rect(0, splitData.topOffset, splitData.splitWidth, splitData.bottomOffset)
             val splitBitmap = bitmapRegionDecoder.decodeRegion(region, null)
             val outputStream = ByteArrayOutputStream()
             splitBitmap.compress(Bitmap.CompressFormat.JPEG, 100, outputStream)