Fix a compiler warning in the sample PMDA.  Also, don't need to set static variables to zero, C standard mandates all compilers do this.
Fix a compiler warning in the sample PMDA.  Also, don't need to set
static variables to zero, C standard mandates all compilers do this.

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