[JITLink] LinkGraph::getName() can be const

Author: weliveindetail

llvm/include/llvm/ExecutionEngine/JITLink/JITLink.h

@@ -799,7 +799,7 @@ class LinkGraph {
 
   /// Returns the name of this graph (usually the name of the original
   /// underlying MemoryBuffer).
-  const std::string &getName() { return Name; }
+  const std::string &getName() const { return Name; }
 
   /// Returns the target triple for this Graph.
   const Triple &getTargetTriple() const { return TT; }