Fix Python stack corruption

The fix is obvious.

gdb/
2014-02-09  Jan Kratochvil  <jan.kratochvil@redhat.com>

	Fix Python stack corruption.
	* python/py-linetable.c (ltpy_get_pcs_for_line, ltpy_has_line): Use
	gdb_py_longest.

Message-ID: <20140207171701.GA25187@host2.jankratochvil.net>