Rollup merge of #78491 - petertodd:2020-inline-from-nonzero, r=sfackler
Rollup merge of #78491 - petertodd:2020-inline-from-nonzero, r=sfackler

Inline NonZeroN::from(n)

Currently this results in the generated assembly having a function call for this trivial conversion.

aidancully/rust,aidancully/rust,graydon/rust,graydon/rust,aidancully/rust,aidancully/rust,graydon/rust,aidancully/rust,graydon/rust,graydon/rust,graydon/rust,aidancully/rust