Fix GLDAS j-job link (#954)

The cd was misplaced when checking for the existence of gldas.fd to
create the link for the j-job, so the directory was never found and
the job never linked.

sorc/link_workflow.sh

@@ -81,8 +81,8 @@ fi
 #---------------------------------------
 #--add files from external repositories
 #---------------------------------------
+cd ${pwd}/../jobs               ||exit 8
 if [ -d ../sorc/gldas.fd ]; then
-  cd ${pwd}/../jobs               ||exit 8
     $LINK ../sorc/gldas.fd/jobs/JGDAS_ATMOS_GLDAS            .
 fi
 cd ${pwd}/../parm               ||exit 8