Commits on Nov 15, 2021

1. rustc_mir_build: reorder bindings …

   No functional changes intended.
   
   I'm playing around with building compiler components using nightly rust
   (2021-11-02) in a non-standard way. I encountered the following error while
   trying to build rustc_mir_build:
   
   ```
   error[E0597]: `wildcard` does not live long enough
       --> rust/src/nightly/compiler/rustc_mir_build/src/build/matches/mod.rs:1767:82
        |
   1767 |         let mut otherwise_candidate = Candidate::new(expr_place_builder.clone(), &wildcard, false);
        |                                                                                  ^^^^^^^^^ borrowed value does not live long enough
   ...
   1799 |     }
        |     -
        |     |
        |     `wildcard` dropped here while still borrowed
        |     borrow might be used here, when `guard_candidate` is dropped and runs the destructor for type `Candidate<'_, '_>`
        |
        = note: values in a scope are dropped in the opposite order they are defined
   ```
   
   I believe this flags an issue that may become an error in the future.
   Swapping the order of `wildcard` and `guard_candidate` resolves it.

   

   krasimirgg committed Nov 15, 2021
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