fix(search): BuildIndex concurrency error #7035
Merged
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Check Running and store true is not an atomic operation, Quit and Running will be wrong variable when StopIndex and UpdateIndex called from http api or index auto_update enabled, leading to goroutine leak, alist log is full of index log:
I removed Running variable, use Quit pointer to check BuildIndex is running, intruducing local running variable to notify WalkDir stop running, make sure only one goroutine is running BuildIndex.