more --blessing + test error annotations fixes

Author: awaitlink

src/test/ui/array-break-length.rs

@@ -1,11 +1,11 @@
 fn main() {
     loop {
-        |_: [_; break]| {} //~ ERROR: `break` outside of loop
+        |_: [_; break]| {} //~ ERROR: `break` outside of a loop
         //~^ ERROR mismatched types
     }
 
     loop {
-        |_: [_; continue]| {} //~ ERROR: `continue` outside of loop
+        |_: [_; continue]| {} //~ ERROR: `continue` outside of a loop
         //~^ ERROR mismatched types
     }
 }

src/test/ui/async-await/async-block-control-flow-static-semantics.rs

@@ -30,14 +30,14 @@ async fn return_targets_async_block_not_async_fn() -> u8 {
 
 fn no_break_in_async_block() {
     async {
-        break 0u8; //~ ERROR `break` inside of an async block
+        break 0u8; //~ ERROR `break` inside of an `async` block
     };
 }
 
 fn no_break_in_async_block_even_with_outer_loop() {
     loop {
         async {
-            break 0u8; //~ ERROR `break` inside of an async block
+            break 0u8; //~ ERROR `break` inside of an `async` block
         };
     }
 }

src/test/ui/async-await/async-block-control-flow-static-semantics.stderr

@@ -1,4 +1,4 @@
-error[E0267]: `break` inside of an async block
+error[E0267]: `break` inside of an `async` block
   --> $DIR/async-block-control-flow-static-semantics.rs:33:9
    |
 LL |       async {
@@ -8,7 +8,7 @@ LL | |         break 0u8;
 LL | |     };
    | |_____- enclosing `async` block
 
-error[E0267]: `break` inside of an async block
+error[E0267]: `break` inside of an `async` block
   --> $DIR/async-block-control-flow-static-semantics.rs:40:13
    |
 LL |           async {

src/test/ui/break-outside-loop.rs

@@ -7,8 +7,8 @@ fn cond() -> bool { true }
 fn foo<F>(_: F) where F: FnOnce() {}
 
 fn main() {
-    let pth = break; //~ ERROR: `break` outside of loop
-    if cond() { continue } //~ ERROR: `continue` outside of loop
+    let pth = break; //~ ERROR: `break` outside of a loop
+    if cond() { continue } //~ ERROR: `continue` outside of a loop
 
     while cond() {
         if cond() { break }
@@ -21,5 +21,5 @@ fn main() {
 
     let rs: Foo = Foo{t: pth};
 
-    let unconstrained = break; //~ ERROR: `break` outside of loop
+    let unconstrained = break; //~ ERROR: `break` outside of a loop
 }

src/test/ui/closures/closure-array-break-length.rs

@@ -1,9 +1,9 @@
 fn main() {
-    |_: [_; continue]| {}; //~ ERROR: `continue` outside of loop
+    |_: [_; continue]| {}; //~ ERROR: `continue` outside of a loop
 
-    while |_: [_; continue]| {} {} //~ ERROR: `continue` outside of loop
+    while |_: [_; continue]| {} {} //~ ERROR: `continue` outside of a loop
     //~^ ERROR mismatched types
 
-    while |_: [_; break]| {} {} //~ ERROR: `break` outside of loop
+    while |_: [_; break]| {} {} //~ ERROR: `break` outside of a loop
     //~^ ERROR mismatched types
 }

src/test/ui/issues/issue-28105.rs

@@ -1,8 +1,8 @@
 // Make sure that a continue span actually contains the keyword.
 
 fn main() {
-    continue //~ ERROR `continue` outside of loop
+    continue //~ ERROR `continue` outside of a loop
     ;
-    break //~ ERROR `break` outside of loop
+    break //~ ERROR `break` outside of a loop
     ;
 }