message: count() for const DexInstruction
diff: @@ -136,7 +136,7 @@ class DexInstruction : public Gatherable {
  /*
  * The number of shorts needed to encode the args.
  */
  - uint16_t count() { return m_count; }
  + uint16_t count() const { return m_count; }
  friend std::string show(const DexInstruction* insn);
  