Auto merge of #6004 - mikerite:default-trait-access-20200904, r=ebroto
Auto merge of #6004 - mikerite:default-trait-access-20200904, r=ebroto

Simplify `clippy::default_trait_access`

Remove repeated matching on the same QPath.

changelog: none

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