fix for make check test fail in libcf-1.0-alpha3 install

[support-libcf at unidata.ucar.edu]

Hi Simon,

Thanks for the fix!  We'll incorporate it in the sources and it will be in the next release.

--Russ

Russ Rew                                         UCAR Unidata Program
russ at unidata.ucar.edu                     http://www.unidata.ucar.edu