message: Improve error message in tensor.cc when IsAligned() test fails
  by logging offending ptr value.
diff: @@ -619,7 +619,7 @@ void Tensor::CheckTypeAndIsAligned(DataType expected_dtype) const {
  CHECK_EQ(dtype(), expected_dtype)
  << DataTypeString(expected_dtype) << " expected, got "
  << DataTypeString(dtype());
  - CHECK(IsAligned()) << "CheckTypeAndIsAligned";
  + CHECK(IsAligned()) << "ptr = " << base<void>();
  }
  void Tensor::CheckIsAlignedAndSingleElement() const {
  