[PATCH] Rewrite gdb_mpz::operator==

[Tom Tromey]

>>>>> "Simon" == Simon Marchi <simark@simark.ca> writes:

>> Yeah, though I was concerned that the compiler might emit warnings about
>> always-true conditions in this case.

Simon> Well, that would be surprising for code in a template, where T is not
Simon> know in advance.

I feel like it happened in the past, but maybe it doesn't any more.
I'll rewrite this patch.

Tom