Merged
requested to merge 1416-threadsanitizer-data-race-resolver-c-3384-in-findname-v9_14 into v9_14
This prevents races on fctx->client whenever a new fetch joins a existing fetch (by calling fctx_join) as it is now invariant for the active life of fctx.
(cherry picked from commit 9ca6ad63)
Closes #1416 (closed)