Rollup merge of #123623 - surechen:fix_123261, r=estebank

Fix OutsideLoop's error suggestion: adding label `'block` for `if` block.

For OutsideLoop we should not suggest add `'block` label in `if` block, or we wiil get another err: block label not supported here.

fixes #123261

compiler/rustc_passes/src/errors.rs

@@ -1100,7 +1100,7 @@ pub struct BreakInsideCoroutine<'a> {
 pub struct OutsideLoop<'a> {
     #[primary_span]
     #[label]
-    pub span: Span,
+    pub spans: Vec<Span>,
     pub name: &'a str,
     pub is_break: bool,
     #[subdiagnostic]
@@ -1112,7 +1112,7 @@ pub struct OutsideLoopSuggestion {
     #[suggestion_part(code = "'block: ")]
     pub block_span: Span,
     #[suggestion_part(code = " 'block")]
-    pub break_span: Span,
+    pub break_spans: Vec<Span>,
 }
 
 #[derive(Diagnostic)]