Variadic macro arguments are not resolved in `elseif` statements

[exodustx0]

asar 1.90
macro foo(...)
	if 0 == 1
		print "no"
	elseif <...[0]> == 42
		print "yes"
	else
		print "bug"
	endif
endmacro

%foo(42)

This patch prints bug, as well as an error that elseif <...[0]> == 42 contains an invalid number, <...[0]> specifically.

https://github.com/RPGHacker/asar/blob/9bd5a49ef0f2965cd8c5b17e9de687c5df854783/src/asar/assembleblock.cpp#L1000-L1011

The above was an attempt at fixing the overarching bug, but it does not account for this condition in replace_macro_args() which guards variadic argument resolving:

https://github.com/RPGHacker/asar/blob/9bd5a49ef0f2965cd8c5b17e9de687c5df854783/src/asar/macro.cpp#L277-L286

I'm not sure at a glance what the solution here would be, but given that this is already a hacky bit of code that fixes most of the overarching bug, that doesn't surprise me.