[mingw-libpng] Use correct BuildRequires

[epienbro]

commit 022f69c38cfe0162c21a806fad0ffa52474b11d8
Author: Erik van Pienbroek <epienbro at fedoraproject.org>
Date:   Sat Mar 10 20:03:45 2012 +0100

    Use correct BuildRequires

 mingw-libpng.spec |    8 ++++----
 1 files changed, 4 insertions(+), 4 deletions(-)
---
diff --git a/mingw-libpng.spec b/mingw-libpng.spec
index ba96369..9a26ebe 100644
--- a/mingw-libpng.spec
+++ b/mingw-libpng.spec
@@ -21,10 +21,10 @@ BuildRequires:  mingw32-gcc
 BuildRequires:  mingw32-binutils
 BuildRequires:  mingw32-zlib
 
-BuildRequires:  mingw32-filesystem >= 95
-BuildRequires:  mingw32-gcc
-BuildRequires:  mingw32-binutils
-BuildRequires:  mingw32-zlib
+BuildRequires:  mingw64-filesystem >= 95
+BuildRequires:  mingw64-gcc
+BuildRequires:  mingw64-binutils
+BuildRequires:  mingw64-zlib
 
 
 %description