Fix gdb 8.1 Solaris compilation

[Pedro Alves]

On 09/21/2017 02:02 PM, Rainer Orth wrote:

> With the changes below, I can build gdb on sparcv9-sun-solaris2.11 and
> amd64-pc-solaris2.11 and a simple smoke test (gdb/gdb gdb/gdb) works.
> 
> Ok for mainline?
> 

OK.

(Since you posted a non-'git format-patch' patch, I feel compelled
to say: please remember to push with meaningful git subject line
and commit log.)

Thanks,
Pedro Alves