Fix `NumericLiteral::format` that may produce a invalid literal
Fix `NumericLiteral::format` that may produce a invalid literal

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