PATCH: PR bfd/14207: linker can produce a NULL GNU_RELRO segment

[nick clifton]

Hi H.J.

> The real bug is in _bfd_elf_map_sections_to_segments.  It
> failed to properly compute file size for PT_GNU_RELRO segment.
> Here is an updated patch.  It removes PT_GNU_RELRO segment
> if doesn't fit.  OK to install?

Approved - please apply.

Cheers
   Nick