Fix Solaris gprof build with --disable-nls

[Nick Clifton]

Hi Rainer,

> gprof fails to compile on Solaris 10 and 11.3 with --disable-nls:

> This is a known issue already partially fixed in binutils/sysdep.h.  For
> gprof, the same fix needs to be applied in bfd/sysdep.h, as the
> following patch does.  Tested on i386-pc-solaris2.10 and
> i386-pc-solaris2.11.
> 
> Ok for master and the 2.37 branch?

Approved for both - please apply.

Cheers
   Nick