Always use two lines for if statements, use a character constant rather
than the 0 integer when NULL-terminating a string, and remove the
unnecessary NULL check before free(value)- free(NULL) is a no-op and
always safe.

Signed-off-by: Dan McGee <dan@archlinux.org>
Signed-off-by: Lukas Fleischer <archlinux@cryptocrack.de>