header_size_adjustment even when there is enough room for the
headers.
* testsuite/script_test_4.sh: New file.
* testsuite/script_test_4.t: New file.
* testsuite/Makefile.am (check_SCRIPTS): Add script_test_4.sh.
(check_DATA): Add script_test_4.stdout.
(MOSTLYCLEANFILES): Likewise.
(script_test_4): New target.
(script_test_4.stdout): New target.
* testsuite/Makefile.in: Rebuild.