[Attr] Add missing header for clang example.

The examples are easy to miss.

diff --git a/clang/examples/AnnotateFunctions/AnnotateFunctions.cpp b/clang/examples/AnnotateFunctions/AnnotateFunctions.cpp
index d201bf3..1724704 100644 (file)
--- a/clang/examples/AnnotateFunctions/AnnotateFunctions.cpp
+++ b/clang/examples/AnnotateFunctions/AnnotateFunctions.cpp
@@ -14,6 +14,7 @@
 #include "clang/Frontend/FrontendPluginRegistry.h"
 #include "clang/AST/AST.h"
 #include "clang/AST/ASTConsumer.h"
+#include "clang/AST/Attr.h"
 #include "clang/Lex/Preprocessor.h"
 #include "clang/Lex/LexDiagnostic.h"
 using namespace clang;