Constify getter methods.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@68745 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/AsmPrinter/AsmPrinter.cpp b/lib/CodeGen/AsmPrinter/AsmPrinter.cpp
index 5ceac3b..c9fd1ac 100644
--- a/lib/CodeGen/AsmPrinter/AsmPrinter.cpp
+++ b/lib/CodeGen/AsmPrinter/AsmPrinter.cpp
@@ -236,7 +236,8 @@
   return false;
 }
 
-std::string AsmPrinter::getCurrentFunctionEHName(const MachineFunction *MF) {
+std::string
+AsmPrinter::getCurrentFunctionEHName(const MachineFunction *MF) const {
   assert(MF && "No machine function?");
   std::string Name = MF->getFunction()->getName();
   if (Name.empty())