Fix "dangling pointer" warning

[proski]

Move file_status to the function scope so it doesn't go out of scope while file_in_head is pointing to the data it contains.

[proski]

This is one of the two warnings reported by gcc 12.2.1 with the -Wall flags. And it's an actual problem. When a variable goes out of scope its memory can be reused so its contents should not be used beyond than point. That is a well known problem in C++ where objects going out of scope call their destructors. But I can imagine it can be problematic in C as well if the compiler allocates stack exactly as written in the code.

[koutcher]

LGTM, thanks.