Add missing #include

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@103260 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Frontend/BoostConAction.cpp b/lib/Frontend/BoostConAction.cpp
index 9e4f97d..505d5af 100644
--- a/lib/Frontend/BoostConAction.cpp
+++ b/lib/Frontend/BoostConAction.cpp
@@ -8,6 +8,7 @@
 //===----------------------------------------------------------------------===//
 #include "clang/Frontend/FrontendActions.h"
 #include "clang/AST/ASTConsumer.h"
+#include <cstdio>
 using namespace clang;
 
 namespace {