Fix build of clang with gcc-4.4: #include <cstdio> was missing.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@79916 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/CGObjCMac.cpp b/lib/CodeGen/CGObjCMac.cpp
index 457bddd..f97b80a 100644
--- a/lib/CodeGen/CGObjCMac.cpp
+++ b/lib/CodeGen/CGObjCMac.cpp
@@ -28,6 +28,7 @@
 #include "llvm/ADT/DenseSet.h"
 #include "llvm/Target/TargetData.h"
 #include <sstream>
+#include <cstdio>
 
 using namespace clang;
 using namespace CodeGen;