hdf-eos clang static analizer complaints

[Kurt Schwehr]

​https://travis-ci.org/rouault/gdal_coverage/builds/217630923

Not new, but it would be good to eventually clean these up... a sample of the warnings...

DGDAL_COMPILATION  -c -o ../../o/GDapi.o GDapi.c
EHapi.c:676:5: warning: Value stored to 'status' is never read
    status = EHchkfid(fid, "EHgetversion", &dum, &sdInterfaceID, &access);
    ^        ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
EHapi.c:1013:21: warning: Call to 'calloc' has an allocation size of 0 bytes
    ptr = (char **) calloc(nentries, sizeof(char *));
                    ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
EHapi.c:1753:24: warning: Call to 'calloc' has an allocation size of 0 bytes
    metabuf = (char *) calloc(32000 * nmeta, 1);
                       ^~~~~~~~~~~~~~~~~~~~~~~~
EHapi.c:2544:24: warning: Call to 'calloc' has an allocation size of 0 bytes
    metabuf = (char *) calloc(32000 * nmeta, 1);
                       ^~~~~~~~~~~~~~~~~~~~~~~~
EHapi.c:2566:5: warning: Value stored to 'metalen' is never read
    metalen = (int)strlen(metabuf);
    ^         ~~~~~~~~~~~~~~~~~~~~
EHapi.c:3521:2: warning: Value stored to 'status' is never read
        status = SDend(sdInterfaceID);
        ^        ~~~~~~~~~~~~~~~~~~~~
EHapi.c:3522:2: warning: Value stored to 'status' is never read
        status = Vend(HDFfid);
        ^        ~~~~~~~~~~~~
7 warnings generated.

[Even Rouault]

This ticket has been automatically closed because Trac is no longer used for GDAL bug tracking, since the project has migrated to GitHub. If you believe this ticket is still valid, you may file it to ​https://github.com/OSGeo/gdal/issues if it is not already reported there.