fgets invocation cleanup

fgets invocation cleanup

From the fgets manpage:

	fgets() reads in at most one less than size characters from stream and
	stores them into the buffer pointed to by s. Reading stops after an EOF
	or a newline. If a newline is read, it is stored into the buffer. A
	'\0' is stored after the last character in the buffer.

This means there is no need at all to do 'size - 1' math. Remove all of that
and just use sizeof() for simplicity on the buffer we plan on reading into.

Signed-off-by: Dan McGee <dan@archlinux.org>