Prevent panics on list-like macro uses with trailing commas
Prevent panics on list-like macro uses with trailing commas

studoot/rustfmt,graydon/rust,aidancully/rust,aidancully/rust,SingingTree/rustfmt,studoot/rustfmt,graydon/rust,flutterhash/rustfmt,aidancully/rust,graydon/rust,graydon/rust,rust-lang/rustfmt,aidancully/rust,SingingTree/rustfmt,rust-lang/rustfmt,aidancully/rust,graydon/rust,aidancully/rust,Emilgardis/rustfmt,graydon/rust,Emilgardis/rustfmt