That's fine until you have multiple lines that goto closefile or freestring, and you mix them up at some point, or you try to refactor the code and forget to update one of your gotos. The resulting bug will wait beneath the waters until one day you get a mysterious "out of file descriptors" or "out of memory" error at some random place in your program after it's been running for awhile.

And really, the extra condition check likely isn't going to affect the critical path, but it will make it a lot easier to reason about the code, especially when someone else has to modify it.