Rollup merge of #62196 - cramertj:vec-leak, r=centril,withoutboats
Rollup merge of #62196 - cramertj:vec-leak, r=centril,withoutboats

Add Vec::leak

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