Check datap buffer isn't NULL before reading into it.
Check datap buffer isn't NULL before reading into it.

	modified:   src/pmdas/lustrecomm/refresh_file.c

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