<deque>: Add missed masking of _First_used_block_idx in deque::shrink_to_fit to correctly end the loop - #4955

<deque>: Add missed masking of _First_used_block_idx in deque::shrink_to_fit to correctly end the loop#4955

Stephan T. Lavavej (StephanTLavavej) merged 2 commits into

microsoft:mainmicrosoft/STL:mainfrom

frederick-vs-ja:deque-missed-maskfrederick-vs-ja/STL:deque-missed-maskCopy head branch name to clipboard