[binutils-gdb] Check file size before getting section contents

[sergiodj+buildbot at sergiodj dot net]

*** TEST RESULTS FOR COMMIT 0630b49c470ca2e3c3f74da4c7e4ff63440dd71f ***

Author: H.J. Lu <hjl.tools@gmail.com>
Branch: master
Commit: 0630b49c470ca2e3c3f74da4c7e4ff63440dd71f

Check file size before getting section contents

Don't check the section size in bfd_get_full_section_contents since
the size of a decompressed section may be larger than the file size.
Instead, check file size in _bfd_generic_get_section_contents.

	PR binutils/21665
	* compress.c (bfd_get_full_section_contents): Don't check the
	file size here.
	* libbfd.c (_bfd_generic_get_section_contents): Check for and
	reject a section whoes size + offset is greater than the size
	of the entire file.
	(_bfd_generic_get_section_contents_in_window): Likewise.