constify a bunch of dwarf stuff now that the registerinfo method
is constified.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@94613 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/AsmPrinter/DwarfPrinter.h b/lib/CodeGen/AsmPrinter/DwarfPrinter.h
index 31aa69a..19d08e2 100644
--- a/lib/CodeGen/AsmPrinter/DwarfPrinter.h
+++ b/lib/CodeGen/AsmPrinter/DwarfPrinter.h
@@ -56,7 +56,7 @@
   Module *M;
 
   /// MF - Current machine function.
-  MachineFunction *MF;
+  const MachineFunction *MF;
 
   /// MMI - Collected machine module information.
   MachineModuleInfo *MMI;