Fix a bunch of namespace polution.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@101376 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/AsmPrinter/DwarfDebug.cpp b/lib/CodeGen/AsmPrinter/DwarfDebug.cpp
index e9f074e..ff69f54 100644
--- a/lib/CodeGen/AsmPrinter/DwarfDebug.cpp
+++ b/lib/CodeGen/AsmPrinter/DwarfDebug.cpp
@@ -1331,7 +1331,7 @@
 
 /// isSubprogramContext - Return true if Context is either a subprogram
 /// or another context nested inside a subprogram.
-bool isSubprogramContext(MDNode *Context) {
+static bool isSubprogramContext(MDNode *Context) {
   if (!Context)
     return false;
   DIDescriptor D(Context);