message: hammer: removed nonportable code
diff: @@ -734,13 +734,11 @@ TEST_CASE("regression tests")
  if (i == 0)
  {
  CHECK(val == json({{"one", 1}, {"two", 2}}));
  - CHECK(static_cast<int>(stream.tellg()) == 28);
  }
  if (i == 1)
  {
  CHECK(val == json({{"three", 3}}));
  - CHECK(static_cast<int>(stream.tellg()) == 44);
  }
  ++i;
  