message: Fix get_line_table method
  Summary:
  Attempt to use `get_line_table()` method fails with error:
  File "...#link-tree/dex.py", line 706, in get_line_table
  op = op_args[0]
  TypeError: 'debug_info_op' object does not support indexing
diff: @@ -700,16 +700,17 @@ class debug_info_item(AutoParser):
  def get_line_table(self):
  if self.line_table is None:
  + line_table = []
  ops = self.get_ops()
  row = debug_info_item.row()
  for op_args in ops:
  - op = op_args[0]
  + op = op_args.op
  if op == DBG_END_SEQUENCE:
  break
  if op == DBG_ADVANCE_PC:
  - row.address += op.addr_offset
  + row.address += op_args.addr_offset
  elif op == DBG_ADVANCE_LINE:
  - row.line += op.line_offset
  + row.line += op_args.line_offset
  elif op == DBG_START_LOCAL:
  pass
  elif op == DBG_START_LOCAL_EXTENDED:
  @@ -723,13 +724,14 @@ class debug_info_item(AutoParser):
  elif op == DBG_SET_EPILOGUE_BEGIN:
  row.epilogue_begin = True
  elif op == DBG_SET_FILE:
  - row.source_file = op.name_idx
  + row.source_file = op_args.name_idx
  else:
  - row.line += op.line_offset
  - row.address += op.addr_offset
  - self.line_table.append(copy.copy(row))
  + row.line += op_args.line_offset
  + row.address += op_args.addr_offset
  + line_table.append(copy.copy(row))
  row.prologue_end = False
  row.epilogue_begin = False
  + self.line_table = line_table
  return self.line_table
  def get_ops(self, reset_offset=True):
  