Busybox patch won't apply patch created by busybox diff

[William Haddon]

Steps to reproduce:

Download haddonthethird.net/loginrec-old.c and  
haddonthethird.net/loginrec-new.c

busybox diff loginrec-old.c loginrec-new.c > diff.patch
cp loginrec-old.c loginrec-patched.c
busybox patch loginrec-patched.c < diff.patch

diff loginrec-old.c loginrec-new.c
diff loginrec-old.c loginrec-patched.c
diff loginrec-patched.c loginrec-new.c

All three files differ. This happens in both Busybox 1.21.1 and the  
latest commit in git.

-- William Haddon