__pmConnectLogger - pmlogger connection PDU buffer pinning fix - III
__pmConnectLogger - pmlogger connection PDU buffer pinning fix - III

Fallout from previous __pmUnpinPDUBuf() change in __pmConnectLogger()
as part of the PCP 4.0 changes.  The logic here was wrong and we were
calling sometimes __pmUnpinPDUBuf() with a bogus buffer address (exposed
by QA 230), which was finally caught by the addition of the assert()
in __pmUnpinPDUBuf() as part of commit 3534fbb.

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