Make helpers static/anonymous.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@168500 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/tools/libclang/CIndexCodeCompletion.cpp b/tools/libclang/CIndexCodeCompletion.cpp
index 46af661..67e64c4 100644
--- a/tools/libclang/CIndexCodeCompletion.cpp
+++ b/tools/libclang/CIndexCodeCompletion.cpp
@@ -236,7 +236,8 @@
   return createCXString(CCStr->getBriefComment(), /*DupString=*/false);
 }
 
-  
+namespace {
+
 /// \brief The CXCodeCompleteResults structure we allocate internally;
 /// the client only sees the initial CXCodeCompleteResults structure.
 struct AllocatedCXCodeCompleteResults : public CXCodeCompleteResults {
@@ -298,6 +299,8 @@
   std::string Selector;
 };
 
+} // end anonymous namespace
+
 /// \brief Tracks the number of code-completion result objects that are 
 /// currently active.
 ///