make this work when constructed with a null module*

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@65733 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/lib/VMCore/AsmWriter.cpp b/lib/VMCore/AsmWriter.cpp
index 4128fdb6e8467357eba072cb8bc7b4986e567391..854c3ba7ccbb782814646782028b24729795291b 100644 (file)
--- a/lib/VMCore/AsmWriter.cpp
+++ b/lib/VMCore/AsmWriter.cpp
@@ -146,9 +146,8 @@ void TypePrinting::clear() {
 }
 
 TypePrinting::TypePrinting(const Module *M) {
-  if (M == 0) return;
-  
   TypeNames = new std::map<const Type *, std::string>();
+  if (M == 0) return;
   
   // If the module has a symbol table, take all global types and stuff their
   // names into the TypeNames map.