Comment 14 for bug 885989

Can anybody help me please? I become this mesage:

gobel@WILKINS:~$ sudo cat patch_bug | patch -p1
can't find file to patch at input line 4
Perhaps you used the wrong -p or --strip option?
The text leading up to this was:
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|diff -urN nautilus-3.4.0.org//libnautilus-private/nautilus-desktop-background.c nautilus-3.4.0/libnautilus-private/nautilus-desktop-background.c
|--- nautilus-3.4.0.org//libnautilus-private/nautilus-desktop-background.c 2011-09-13 07:14:31.000000000 +0800
|+++ nautilus-3.4.0/libnautilus-private/nautilus-desktop-background.c 2011-11-09 14:41:34.037435603 +0800
--------------------------
File to patch:

I edited to nautilus-3.4.0 because is my currently version on ubuntu 12.04