libpcp/pmns.c: small duplicate names fix
libpcp/pmns.c: small duplicate names fix

Missed in the previous round of changes ... when duplicates are
NOT allowed, we were missing the comparison of dynamic names, so
in the PMNS
	foo   123:*:*
and
	bar   123:*:*
were not identified as duplicates.  This commit fixes that.

wuliming/pcp,wuliming/pcp,edwardt/pcp,wuliming/pcp,edwardt/pcp,adfernandes/pcp,aeg-aeg/pcpfans,edwardt/pcp,tjanez/pcp,adfernandes/pcp,aeg-aeg/pcpfans,prasincs/pcp,wuliming/pcp,edwardt/pcp,edwardt/pcp,tjanez/pcp,aeg-aeg/pcpfans,adfernandes/pcp,adfernandes/pcp,aeg-aeg/pcpfans,tjanez/pcp,tjanez/pcp,tjanez/pcp,adfernandes/pcp,tjanez/pcp,tjanez/pcp,tjanez/pcp,adfernandes/pcp,prasincs/pcp,prasincs/pcp,edwardt/pcp,aeg-aeg/pcpfans,edwardt/pcp,adfernandes/pcp,wuliming/pcp,aeg-aeg/pcpfans,prasincs/pcp,prasincs/pcp,wuliming/pcp,aeg-aeg/pcpfans,edwardt/pcp,adfernandes/pcp,prasincs/pcp,prasincs/pcp,wuliming/pcp,prasincs/pcp,aeg-aeg/pcpfans,wuliming/pcp