Use cstdio instead of stdio.h


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@188678 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/tools/libclang/Indexing.cpp b/tools/libclang/Indexing.cpp
index 98395e6..99fcdb6 100644
--- a/tools/libclang/Indexing.cpp
+++ b/tools/libclang/Indexing.cpp
@@ -31,7 +31,7 @@
 #include "llvm/Support/MemoryBuffer.h"
 #include "llvm/Support/Mutex.h"
 #include "llvm/Support/MutexGuard.h"
-#include <stdio.h>
+#include <cstdio>
 
 using namespace clang;
 using namespace cxtu;