Work around a bogus gcc 4.2 warning.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@39993 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/utils/TableGen/AsmWriterEmitter.cpp b/utils/TableGen/AsmWriterEmitter.cpp
index 4a72e76..22ff064 100644
--- a/utils/TableGen/AsmWriterEmitter.cpp
+++ b/utils/TableGen/AsmWriterEmitter.cpp
@@ -28,7 +28,8 @@
          C == '_';
 }
 
-namespace {
+// This should be an anon namespace, this works around a GCC warning.
+namespace llvm {  
   struct AsmWriterOperand {
     enum { isLiteralTextOperand, isMachineInstrOperand } OperandType;