Only close(fd) if it's valid.
Only close(fd) if it's valid.

	modified:   src/pmdas/linux/proc_pid.c

adfernandes/pcp,andyvand/cygpcpfans,prasincs/pcp,aeg-aeg/pcpfans,mbaldessari/pcp,adfernandes/pcp,adfernandes/pcp,ryandoyle/pcp_original,prasincs/pcp,prasincs/pcp,andyvand/cygpcpfans,tjanez/pcp,wuliming/pcp,adfernandes/pcp,mbaldessari/pcp,andyvand/cygpcpfans,andyvand/cygpcpfans,ryandoyle/pcp_original,edwardt/pcp,aeg-aeg/pcpfans,andyvand/cygpcpfans,tjanez/pcp,edwardt/pcp,prasincs/pcp,ryandoyle/pcp_original,adfernandes/pcp,ryandoyle/pcp_original,wuliming/pcp,edwardt/pcp,prasincs/pcp,aeg-aeg/pcpfans,mbaldessari/pcp,tjanez/pcp,tjanez/pcp,ryandoyle/pcp_original,aeg-aeg/pcpfans,aeg-aeg/pcpfans,prasincs/pcp,tjanez/pcp,wuliming/pcp,adfernandes/pcp,wuliming/pcp,wuliming/pcp,andyvand/cygpcpfans,aeg-aeg/pcpfans,edwardt/pcp,ryandoyle/pcp_original,andyvand/cygpcpfans,edwardt/pcp,aeg-aeg/pcpfans,prasincs/pcp,edwardt/pcp,adfernandes/pcp,ryandoyle/pcp_original,ryandoyle/pcp_original,aeg-aeg/pcpfans,wuliming/pcp,tjanez/pcp,wuliming/pcp,edwardt/pcp,mbaldessari/pcp,mbaldessari/pcp,wuliming/pcp,prasincs/pcp,adfernandes/pcp,mbaldessari/pcp,edwardt/pcp,andyvand/cygpcpfans,tjanez/pcp,tjanez/pcp