minor tidying, only do work if a function is 
actually X86_StdCall or X86_FastCall.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98374 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Target/X86/X86COFFMachineModuleInfo.h b/lib/Target/X86/X86COFFMachineModuleInfo.h
index f43b5ce..d07f073 100644
--- a/lib/Target/X86/X86COFFMachineModuleInfo.h
+++ b/lib/Target/X86/X86COFFMachineModuleInfo.h
@@ -30,8 +30,8 @@
   X86COFFMachineModuleInfo(const MachineModuleInfo &) {}
   virtual ~X86COFFMachineModuleInfo();
 
-  void DecorateCygMingName(MCSymbol *&Name, MCContext &Ctx,
-                           const Function *F, const TargetData &TD);
+  MCSymbol *DecorateCygMingName(MCSymbol *Name, MCContext &Ctx,
+                                const Function *F, const TargetData &TD);
 
   void addExternalFunction(StringRef Name) {
     CygMingStubs.insert(Name);