restore msrv compatibility by removing sole if let ... else

Author: Byron

gix-config/src/file/section/body.rs

@@ -84,9 +84,10 @@ impl<'event> Body<'event> {
 
     /// Returns an iterator visiting all keys in order.
     pub fn keys(&self) -> impl Iterator<Item = &Key<'event>> {
-        self.0
-            .iter()
-            .filter_map(|e| if let Event::SectionKey(k) = e { Some(k) } else { None })
+        self.0.iter().filter_map(|e| match e {
+            Event::SectionKey(k) => Some(k),
+            _ => None,
+        })
     }
 
     /// Returns true if the section contains the provided key.

gix/src/object/tree/diff/for_each.rs

@@ -132,8 +132,9 @@ where
     }
 
     fn process_tracked_changes(&mut self) -> Result<Option<rewrites::Outcome>, Error> {
-        let Some(tracked) = self.tracked.as_mut() else {
-            return Ok(None)
+        let tracked = match self.tracked.as_mut() {
+            Some(t) => t,
+            None => return Ok(None),
         };
 
         let outcome = tracked.emit(
@@ -201,8 +202,8 @@ where
     }
 
     fn visit(&mut self, change: gix_diff::tree::visit::Change) -> gix_diff::tree::visit::Action {
-        if let Some(tracked) = self.tracked.as_mut() {
-            tracked
+        match self.tracked.as_mut() {
+            Some(tracked) => tracked
                 .try_push_change(change, self.recorder.path())
                 .map(|change| {
                     Self::emit_change(
@@ -214,16 +215,15 @@ where
                         &mut self.err,
                     )
                 })
-                .unwrap_or(gix_diff::tree::visit::Action::Continue)
-        } else {
-            Self::emit_change(
+                .unwrap_or(gix_diff::tree::visit::Action::Continue),
+            None => Self::emit_change(
                 change,
                 self.recorder.path(),
                 &mut self.visit,
                 self.src_tree.repo,
                 self.other_repo,
                 &mut self.err,
-            )
+            ),
         }
     }
 }