More LLVMContext-ification.

llvm-svn: 74807
diff --git a/llvm/lib/VMCore/Function.cpp b/llvm/lib/VMCore/Function.cpp
index eeade05..1fa0378 100644
--- a/llvm/lib/VMCore/Function.cpp
+++ b/llvm/lib/VMCore/Function.cpp
@@ -114,8 +114,8 @@
 // Helper Methods in Function
 //===----------------------------------------------------------------------===//
 
-LLVMContext* Function::getContext() {
-  Module* M = getParent();
+LLVMContext* Function::getContext() const {
+  const Module* M = getParent();
   if (M) return &M->getContext();
   return 0;
 }