Line comments are not supported in multiline style declarations

There seems to be an issue with parsing line comments within multiline style declarations. For example, when a line comment is added at the end of a multiline calc() function, it results in a parsing error. This is similar to a previously reported issue in stylelint-processor-styled-components (issue #156). Similarly to (issue #156) converting to a typical CSS comment /* */ avoids the error.

Example The following code snippet fails to parse correctly:

const MyStyledComponent = styled.div`
  max-height: calc(
    ${someVariable1} + ${someVariable2} + ${someVariable3}
  ); // This comment causes a parsing error
`;