Neel Natu 923ca9167b Destroy the pmap 'pm_mutex' in pmap_release() otherwise we will panic
subsequently in pmap_pinit() with the following signature:

panic: lock "pmap" 0xc7878bc8 already initialized

This bug was uncovered by the changes made to vm_map.c in r206140.
2010-04-14 01:57:53 +00:00
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