Backport fixes for bug 1552627 and 1549833
Not sure if they are as easily exploitable in Tor Browser as they are in Firefox but we should be better safe here than sorry and backport the pref changes coming with bug 1552627 and 1549833.
Not sure if they are as easily exploitable in Tor Browser as they are in Firefox but we should be better safe here than sorry and backport the pref changes coming with bug 1552627 and 1549833.