Don't use "if let" bindings to only check a value and not actually bind anything.

For example:  `if let Some(_) = foo() {}`	can be reduced to	`if foo().is_some() {}`   (clippy::redundant_pattern_matching)

1 files changed, 1 insertions, 1 deletions

diff --git a/src/librustc_errors/lib.rs b/src/librustc_errors/lib.rs
index 5b00087de6f..f0e388a597b 100644
--- a/src/librustc_errors/lib.rs
+++ b/src/librustc_errors/lib.rs
@@ -163,7 +163,7 @@ impl CodeSuggestion {
                         None => buf.push_str(&line[lo..]),
                     }
                 }
-                if let None = hi_opt {
+                if hi_opt.is_none() {
                     buf.push('\n');
                 }
             }