Fix rust 1.89.0 warnings

Author: peso

src/graph.rs

@@ -187,7 +187,7 @@ impl GitGraph {
         self.repository
     }
 
-    pub fn commit(&self, id: Oid) -> Result<Commit, Error> {
+    pub fn commit(&self, id: Oid) -> Result<Commit<'_>, Error> {
         self.repository.find_commit(id)
     }
 }

src/print/unicode.rs

@@ -54,7 +54,6 @@ graph-lines, text-lines, start-row
 */
 pub type UnicodeGraphInfo = (Vec<String>, Vec<String>, Vec<usize>);
 
-
 /// Creates a text-based visual representation of a graph.
 pub fn print_unicode(graph: &GitGraph, settings: &Settings) -> Result<UnicodeGraphInfo, String> {
     if graph.all_branches.is_empty() {