- Use more relevant name 'signo' instead of 'i' for the local variable
which contains a signal number to send for the current exception.
- Eliminate two labels 'userout' and 'out' which point to the very end
of the trap() function. Instead use return directly.
- Re-indent the prot_fault_translation block by reducing if() nesting.
- Some more monor style changes.
Requested and reviewed by: bde
Tested by: pho
Sponsored by: The FreeBSD Foundation
MFC after: 1 week
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