Make MemoryObject accessor members const again

llvm-svn: 151687
diff --git a/llvm/lib/Target/X86/Disassembler/X86Disassembler.cpp b/llvm/lib/Target/X86/Disassembler/X86Disassembler.cpp
index efbe326..676321a 100644
--- a/llvm/lib/Target/X86/Disassembler/X86Disassembler.cpp
+++ b/llvm/lib/Target/X86/Disassembler/X86Disassembler.cpp
@@ -121,7 +121,7 @@
 MCDisassembler::DecodeStatus
 X86GenericDisassembler::getInstruction(MCInst &instr,
                                        uint64_t &size,
-                                       MemoryObject &region,
+                                       const MemoryObject &region,
                                        uint64_t address,
                                        raw_ostream &vStream,
                                        raw_ostream &cStream) const {