Add more nbsp to unicode-chars test

Author: dtolnay

tests/ui/parser/unicode-chars.rs

@@ -2,8 +2,14 @@ fn main() {
     let y = 0;
     //~^ ERROR unknown start of token: \u{37e}
     //~^^ HELP Unicode character ';' (Greek Question Mark) looks like ';' (Semicolon), but it is not
-        let x = 0;
+        let x = 0;
     //~^ ERROR unknown start of token: \u{a0}
     //~^^ NOTE character appears 3 more times
     //~^^^ HELP Unicode character ' ' (No-Break Space) looks like ' ' (Space), but it is not
+    //~^^^^ ERROR unknown start of token: \u{a0}
+    //~^^^^^ HELP Unicode character ' ' (No-Break Space) looks like ' ' (Space), but it is not
+    //~^^^^^^ ERROR unknown start of token: \u{a0}
+    //~^^^^^^^ HELP Unicode character ' ' (No-Break Space) looks like ' ' (Space), but it is not
+    //~^^^^^^^^ ERROR unknown start of token: \u{a0}
+    //~^^^^^^^^^ HELP Unicode character ' ' (No-Break Space) looks like ' ' (Space), but it is not
 }

tests/ui/parser/unicode-chars.stderr

@@ -12,14 +12,47 @@ LL |     let y = 0;
 error: unknown start of token: \u{a0}
   --> $DIR/unicode-chars.rs:5:5
    |
-LL |         let x = 0;
+LL |         let x = 0;
    |     ^^^^
    |
    = note: character appears 3 more times
 help: Unicode character ' ' (No-Break Space) looks like ' ' (Space), but it is not
    |
-LL |         let x = 0;
+LL |         let x = 0;
    |     ++++
 
-error: aborting due to 2 previous errors
+error: unknown start of token: \u{a0}
+  --> $DIR/unicode-chars.rs:5:12
+   |
+LL |         let x = 0;
+   |            ^
+   |
+help: Unicode character ' ' (No-Break Space) looks like ' ' (Space), but it is not
+   |
+LL |         let x = 0;
+   |            +
+
+error: unknown start of token: \u{a0}
+  --> $DIR/unicode-chars.rs:5:14
+   |
+LL |         let x = 0;
+   |              ^
+   |
+help: Unicode character ' ' (No-Break Space) looks like ' ' (Space), but it is not
+   |
+LL |         let x = 0;
+   |              +
+
+error: unknown start of token: \u{a0}
+  --> $DIR/unicode-chars.rs:5:16
+   |
+LL |         let x = 0;
+   |                ^
+   |
+help: Unicode character ' ' (No-Break Space) looks like ' ' (Space), but it is not
+   |
+LL |         let x = 0;
+   |                +
+
+error: aborting due to 5 previous errors