forgot to free some allocated memory

git-svn-id: https://svn.mcs.anl.gov/repos/parallel-netcdf/trunk@1623 c368ceb8-fd28-0410-a457-e46ee1d7cd4a
no need of this error checking

git-svn-id: https://svn.mcs.anl.gov/repos/parallel-netcdf/trunk@1624 c368ceb8-fd28-0410-a457-e46ee1d7cd4a
replace malloc and free with NCI_Malloc and NCI_Free

git-svn-id: https://svn.mcs.anl.gov/repos/parallel-netcdf/trunk@1625 c368ceb8-fd28-0410-a457-e46ee1d7cd4a