Fix i386 apic support merge botch.  sizeof(long) is 8, not 4.  This fixes the annoying 'sysctl: hw.intrcnt: out of memory' error message in systat.
Fix i386 apic support merge botch.  sizeof(long) is 8, not 4.  This fixes
the annoying 'sysctl: hw.intrcnt: out of memory' error message in systat.

Approved by:  re (rwatson)

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