[raidem] Save original when applying libpng patch

[Bruno Wolff III]

commit 3d380bea4939d2d81bba865521c45858f938f2cd
Author: Bruno Wolff III <bruno at wolff.to>
Date:   Sun Nov 6 09:19:06 2011 -0600

    Save original when applying libpng patch
    
    This makes modifying things in steps easier.

 raidem.spec |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/raidem.spec b/raidem.spec
index e634c0c..024c9e0 100644
--- a/raidem.spec
+++ b/raidem.spec
@@ -31,7 +31,7 @@ fun.
 %setup -q -n %{name}-%{version}-src
 %patch0 -p1 -z .syslibs
 %patch1 -p1
-%patch2
+%patch2 -z .libpng
 # remove all included system libs, to avoid using the included system headers.
 mv lib/loadpng .
 rm -fr lib/*