Fixed a compiler warning when USE_POSIX_THREADS is not def'd in XDRStreamMarshaller
Fixed a compiler warning when USE_POSIX_THREADS is not def'd in XDRStreamMarshaller

OPENDAP/libdap4,OPENDAP/libdap4,OPENDAP/libdap4,OPENDAP/libdap4,OPENDAP/libdap4,OPENDAP/libdap4