Bad codegen with error in operator overload.

[Y-Less]

native printf(const str[], ...);

operator=(Tag:x)
{
	return _:x:
}

main()
{
	new a = Tag:5;
	printf("%d", a);
}

This code should define a custom assignment operator for Tag:, and call it. Instead, it gives an unused symbol warning for the operator= and generates no code at all. Compiling with -a gives:

CODE 0	; 0
;program exit point
	halt 0


STKSIZE 1000

Literally a totally blank AMX.

Note: This took a while to spot. I found the original bug here pawn-lang/compiler#387 and attributed it to the operator somehow, but @YashasSamaga was the one who noticed my typo, the root cause. I wrote _:x: instead of _:x; - a colon not a semi-colon, and very hard to spot. This should give a syntax error and not compile, but somehow messes up. I do know some errors are ignored when the function isn't used, which should be the case were it not, but it is. I think the fact that its an operator overload confuses that part of the compiler as well.

[Thiadmer Riemersma]

Fixed in commit a02e8ae.