Backport PR #16311 on branch v3.2.x (don't override non-Python signal handlers)#16321

timhoffm merged 1 commit intomatplotlib:v3.2.xmatplotlib/matplotlib:v3.2.xfrom

meeseeksmachine:auto-backport-of-pr-16311-on-v3.2.xmeeseeksmachine/matplotlib:auto-backport-of-pr-16311-on-v3.2.xCopy head branch name to clipboard