Fix documentation of `Rc::make_mut` regarding `rc::Weak`.#61135

Merged

bors merged 3 commits intorust-lang:masterfrom czipperz:rc-make_mut-weak-doc

Jun 4, 2019

+27-7

Commits on May 24, 2019

Fix documentation of Rc::make_mut regarding rc::Weak.
czipperz
committed

Commits on May 25, 2019