Bless miri tests

Author: traviscross

src/tools/miri/tests/fail/closures/deref-in-pattern.stderr

@@ -7,7 +7,7 @@ LL | |         match x {
 LL | |             &&_y => {},
 LL | |         }
 LL | |     };
-   | |_____^ constructing invalid value: encountered a dangling reference (use-after-free)
+   | |_____^ Undefined Behavior occurred here
    |
    = help: this indicates a bug in the program: it performed an invalid operation, and caused Undefined Behavior
    = help: see https://doc.rust-lang.org/nightly/reference/behavior-considered-undefined.html for further information

src/tools/miri/tests/fail/closures/partial-pattern.stderr

@@ -7,7 +7,7 @@ LL | |         match x {
 LL | |             (&_y, _) => {},
 LL | |         }
 LL | |     };
-   | |_____^ constructing invalid value: encountered a dangling reference (use-after-free)
+   | |_____^ Undefined Behavior occurred here
    |
    = help: this indicates a bug in the program: it performed an invalid operation, and caused Undefined Behavior
    = help: see https://doc.rust-lang.org/nightly/reference/behavior-considered-undefined.html for further information

src/tools/miri/tests/fail/closures/uninhabited-variant.stderr

@@ -2,7 +2,7 @@ error: Undefined Behavior: read discriminant of an uninhabited enum variant
   --> tests/fail/closures/uninhabited-variant.rs:LL:CC
    |
 LL |         match r {
-   |               ^ read discriminant of an uninhabited enum variant
+   |               ^ Undefined Behavior occurred here
    |
    = help: this indicates a bug in the program: it performed an invalid operation, and caused Undefined Behavior
    = help: see https://doc.rust-lang.org/nightly/reference/behavior-considered-undefined.html for further information