Bug 1587394 - Bypass the lint check for the pref; r=nika

Differential Revision: https://phabricator.services.mozilla.com/D49745

--HG--
extra : moz-landing-system : lando

tools/lint/libpref/__init__.py

@@ -20,6 +20,7 @@ IGNORE_PREFS = {
     'fission.autostart',                # Uses the 'locked' attribute.
     'browser.dom.window.dump.enabled',  # Uses the 'sticky' attribute.
     'apz.fling_curve_function_y2',      # This pref is a part of a series.
+    'dom.postMessage.sharedArrayBuffer.bypassCOOP_COEP.insecure.enabled',  # NOQA: E501; Uses the 'locked' attribute.
 }