Fix a typo in a comment in pmcd code.
Fix a typo in a comment in pmcd code.

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