Update compiler/rustc_mir/src/borrow_check/diagnostics/explain_borrow.rs

Co-authored-by: Niko Matsakis <niko@alum.mit.edu>

Author: ChrisPardy

compiler/rustc_mir/src/borrow_check/diagnostics/explain_borrow.rs

@@ -76,8 +76,8 @@ impl BorrowExplanation {
                     LaterUseKind::Other => "used here",
                 };
                 // We can use `var_or_use_span` if either `path_span` is not present, or both spans are the same
-                if path_span.map_or(true, |path_span| path_span == var_or_use_span) {
-                    if !borrow_span.map_or(false, |sp| sp.overlaps(var_or_use_span)) {
+                if path_span.map(|path_span| path_span == var_or_use_span).unwrap_or(true) {
+                    if borrow_span.map(|sp| !sp.overlaps(var_or_use_span)).unwrap_or(true) {
                         err.span_label(
                             var_or_use_span,
                             format!("{}borrow later {}", borrow_desc, message),