Fix r27451: DBFGetFieldInfo() needs 12 bytes as it may fill up to 11 usefull bytes + the terminating 0 (#5515)

git-svn-id: https://svn.osgeo.org/gdal/trunk@27453 f0d54148-0727-0410-94bb-9a71ac55c965
Merge branch 'trunk' into trunk_travis_macosx