firefox signals 4 on aarch64 (tabs crashes)

[Jesper Schmitz Mouridsen]

Hi

firefox-esr 115.0.4 works on aarch64
else it exits with signal 4. with and without aslr enabled.

I compiled firefox 120 with clang15 as of recent ports changes still the 
same. It is too cumbersome for me to bisect on the arm hardware I have 
available, so perhaps someone has an idea what has happened since 115.
I have not tested 116-118 119 fails as well.

Thanks

jsm