submodules: update clippy from 1df5766c to a3c77f6a

Changes:
````
s/rustfmt-preview/rustfmt/
Swap if branches
Fix c_void false positive caused by libc refactoring
rustup https://github.com/rust-lang/rust/pull/56502 ( .hir -> .hir() )
typo: emum → enum
Fix format.
Add sysroot gettinh code to dogfood tests.
Add sysroot getting code to tests.
Don't try to determine sysroot. rustc_driver will use default value.
Fix suggestion for multiple derefs
Fix `clone_on_copy` not detecting derefs sometimes
````
This commit is contained in:
Matthias Krüger 2018-12-08 15:02:12 +01:00
parent 9772d02774
commit 83f47b7fea

@ -1 +1 @@
Subproject commit 1df5766cbb559aab0ad5c2296d8b768182b5186c
Subproject commit a3c77f6ad1c1c185e561e9cd7fdec7db569169d1