* ogcoff.pas: when encountering symbol of unsupported type in input object file, give a meaningful error message instead of internal error. Mantis #27020.
- removed repeating check of section index.


git-svn-id: http://svn.freepascal.org/svn/fpc/trunk@29062 3ad0048d-3df7-0310-abae-a5850022a9f2