Fix hashtable_find_slot infinite loop with tombstones#8
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Fix hashtable_find_slot infinite loop with tombstones#8
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When all slots in a probe sequence are tombstones or non-matching entries,
hashtable_find_slotloops forever. Fix by limiting probes tocapacityiterations and reusing the first tombstone slot for new insertions.Also update
get,set, andremoveto handle tombstone slots returned byfind_slot.