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LibWeb: Don't assert if reconsuming on an empty TokenStream

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This fixes #9978.

When a TokenStream is empty, reading its `current_token()` still returns
a token (for EOF) so it makes sense to allow users to
`reconsume_current_input_token()` that token, so they do not have to
handle that themselves. Instead of VERIFY()ing, we can just no-op when
reconsuming token 0.
This commit is contained in:
Sam Atkins 2021-09-12 15:02:04 +01:00 • committed by Andreas Kling
parent f58f58fb77
commit 8ddce2faaf
1 changed files with 2 additions and 2 deletions
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4
Userland/Libraries/LibWeb/CSS/Parser/Parser.cpp
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@ -105,8 +105,8 @@ T const& TokenStream<T>::current_token()
template<typename T> template<typename T>
void TokenStream<T>::reconsume_current_input_token() void TokenStream<T>::reconsume_current_input_token()
{ {
VERIFY(m_iterator_offset >= 0); if (m_iterator_offset >= 0)
--m_iterator_offset; --m_iterator_offset;
} }
template<typename T> template<typename T>