Make MemoryObject accessor members const again



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@151687 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/MC/MCDisassembler/Disassembler.cpp b/lib/MC/MCDisassembler/Disassembler.cpp
index 3de6f64..605cf88 100644
--- a/lib/MC/MCDisassembler/Disassembler.cpp
+++ b/lib/MC/MCDisassembler/Disassembler.cpp
@@ -113,9 +113,9 @@
                      Bytes(bytes), Size(size), BasePC(basePC) {}
  
   uint64_t getBase() const { return BasePC; }
-  uint64_t getExtent() { return Size; }
+  uint64_t getExtent() const { return Size; }
 
-  int readByte(uint64_t Addr, uint8_t *Byte) {
+  int readByte(uint64_t Addr, uint8_t *Byte) const {
     if (Addr - BasePC >= Size)
       return -1;
     *Byte = Bytes[Addr - BasePC];