Fix broken tests

Author: varkor

src/test/run-pass/binding/empty-types-in-patterns.rs

@@ -60,6 +60,7 @@ fn main() {
     let x: Result<u32, &!> = Ok(123);
     match x {
         Ok(y) => y,
+        Err(_) => unimplemented!(),
     };
 
     bar(&[]);

src/test/ui/issues/issue-44402.rs

@@ -33,7 +33,10 @@ fn test_a() {
 
 fn test_b() {
     let x: Option<Bar> = None;
-    match x { None => () }
+    match x {
+        Some(_) => (),
+        None => ()
+    }
 }
 
 fn main() { }

src/test/ui/unreachable/unreachable-loop-patterns.rs

@@ -8,14 +8,26 @@
 // option. This file may not be copied, modified, or distributed
 // except according to those terms.
 
+// compile-fail
+
 #![feature(never_type)]
 #![feature(exhaustive_patterns)]
+
+#![allow(unreachable_code)]
 #![deny(unreachable_patterns)]
 
-fn main() {
-    let x: &[!] = &[];
+enum Void {}
+
+impl Iterator for Void {
+    type Item = Void;
 
-    for _ in x {}
+    fn next(&mut self) -> Option<Void> {
+        None
+    }
+}
+
+fn main() {
+    for _ in unimplemented!() as Void {}
     //~^ ERROR unreachable pattern
 }
 

src/test/ui/unreachable/unreachable-loop-patterns.stderr

@@ -1,11 +1,11 @@
 error: unreachable pattern
-  --> $DIR/unreachable-loop-patterns.rs:18:9
+  --> $DIR/unreachable-loop-patterns.rs:30:9
    |
-LL |     for _ in x {}
+LL |     for _ in unimplemented!() as Void {}
    |         ^
    |
 note: lint level defined here
-  --> $DIR/unreachable-loop-patterns.rs:13:9
+  --> $DIR/unreachable-loop-patterns.rs:17:9
    |
 LL | #![deny(unreachable_patterns)]
    |         ^^^^^^^^^^^^^^^^^^^^