ActionButtonBase _webView null check, by @gsantner

Author: gsantner

app/src/main/java/net/gsantner/markor/format/ActionButtonBase.java

@@ -1012,7 +1012,7 @@ public void runJumpBottomTopAction(ActionItem.DisplayMode displayMode) {
         if (displayMode == ActionItem.DisplayMode.EDIT) {
             int pos = _hlEditor.getSelectionStart();
             _hlEditor.setSelection(pos == 0 ? _hlEditor.getText().length() : 0);
-        } else if (displayMode == ActionItem.DisplayMode.VIEW) {
+        } else if (displayMode == ActionItem.DisplayMode.VIEW && _webView != null) {
             boolean top = _webView.getScrollY() > 100;
             _webView.scrollTo(0, top ? 0 : _webView.getContentHeight());
             if (!top) {