Whitespace after invalid parameter-macro usage is ignored

[wixoaGit]

A change in #827 intended to fix #698 ended up adding a new bug in the preprocessing of whitespace.

#define TEST(x)
/world/New()
	..()
	var/TEST = new /obj()
	var/t = TEST .type

TEST .type should not be valid here, but the preprocessor is throwing away the space during its search for TEST(x)'s arguments.

Relevant line

[Altoids1]

Agh!