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Fix visit case use after free - #88
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When the payload type of an enum case could not be resolved, visit_case popped the EnumItem from the items vector, destroying the case that _current_enum_case pointed into, and then fell through to code that read the case's children and popped it from the destroyed EnumItem. Return immediately after popping the EnumItem instead, restoring the enum case depth and current enum case, as the original implementation does. Callers already revert their items when visit_case returns false. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
…t_case The item count passed to revert() was read after visiting the payload type, so the revert never removed anything. Read it before the visit, as the original implementation and visit_element do. This does not change the resulting layout, since the case's children are cleared immediately after reverting. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
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