[Bug 247744] www/chromium: crash when U2F is used

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=247744

            Bug ID: 247744
           Summary: www/chromium: crash when U2F is used
           Product: Ports & Packages
           Version: Latest
          Hardware: Any
                OS: Any
            Status: New
          Severity: Affects Only Me
          Priority: ---
         Component: Individual Port(s)
          Assignee: chromium at FreeBSD.org
          Reporter: henry.hu.sh at gmail.com
             Flags: maintainer-feedback?(chromium at FreeBSD.org)
          Assignee: chromium at FreeBSD.org

This seems to be a repeat of PR 196754. To test it, just access 
https://demo.yubico.com/webauthn-technical/registration and click "Next". 

Seems like a null pointer:
(gdb) x/10i $rip
=> 0x517df60:   mov    (%rsi),%rax
   0x517df63:   mov    %r14,%rdi
   0x517df66:   mov    %rbx,%rdx
   0x517df69:   callq  *0x20(%rax)
   0x517df6c:   mov    %r14,%rax
   0x517df6f:   pop    %rbx
   0x517df70:   pop    %r14
   0x517df72:   pop    %rbp
   0x517df73:   retq
   0x517df74:   int3
(gdb) p $rsi
$1 = 0

Without debug symbol it's hard to get deeper.

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