[DomCrawler] Fix null namespace issue in Crawler #39474
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derrabus
approved these changes
Dec 11, 2020
jderusse
approved these changes
Dec 11, 2020
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Thank you @prosalov. |
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In this case
issetmay cause an issue if null value would be stored in$this->namespacesor$this->cachedNamespaces, but never fetched, as if condition would return false. This PR is for 5.x, because namespace caching was introduced recently (#39097).