Crash when opening the dropdown menu on Oreo

[diegocarloslima]

Environment

One Plus 5
Android 8.0
Adblock Browser abb_fennec_56_0_merge

How to reproduce

1. Open the app and click on the overflow dropdown menu (three vertical dots)

Observed behaviour

The app crashes with the following exception:

01-16 09:20:22.500 19762-19762/org.adblockplus.browser E/AndroidRuntime: FATAL EXCEPTION: main
 Process: org.adblockplus.browser, PID: 19762
 java.lang.NullPointerException: Attempt to invoke interface method 'android.view.MenuItem android.view.MenuItem.setEnabled(boolean)' on a null object reference
 at org.adblockplus.browser.BrowserAppUtils.updateBlockAdsMenuItem(BrowserAppUtils.java:39)
 at org.mozilla.gecko.BrowserApp.onCreateOptionsMenu(BrowserApp.java:3426)
 at org.mozilla.gecko.GeckoApp.onCreatePanelMenu(GeckoApp.java:523)
 at org.mozilla.gecko.GeckoApp.getMenuPanel(GeckoApp.java:450)
 at org.mozilla.gecko.toolbar.BrowserToolbar.openOptionsMenu(BrowserToolbar.java:881)
 at org.mozilla.gecko.BrowserApp.openOptionsMenu(BrowserApp.java:3460)
 at org.mozilla.gecko.toolbar.BrowserToolbar$7.onClick(BrowserToolbar.java:338)
 at android.view.View.performClick(View.java:6303)
 at android.view.View$PerformClick.run(View.java:24828)
 at android.os.Handler.handleCallback(Handler.java:789)
 at android.os.Handler.dispatchMessage(Handler.java:98)
 at android.os.Looper.loop(Looper.java:164)
 at android.app.ActivityThread.main(ActivityThread.java:6809)
 at java.lang.reflect.Method.invoke(Native Method)
 at com.android.internal.os.Zygote$MethodAndArgsCaller.run(Zygote.java:240)
 at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:767)

Expected behaviour

The app should open the overflow dropdown menu normally. This is due to the fact that the abb_block_ads menu item is missing on the -v26 menu resources .xml files

[abpbot]

A commit referencing this issue has landed:
​Issue 6278 - Crash when opening the dropdown menu on Oreo