Count lines only if file is valid utf-8

src/main.rs

@@ -24,10 +24,11 @@ fn count_lines(repo: &Repository, commit: &Commit) -> anyhow::Result<usize> {
         if matches!(entry.mode, EntryMode::Blob | EntryMode::BlobExecutable) {
             let object = repo.find_object(entry.oid)?;
             let data = object.detach().data;
-            let text = String::from_utf8(data)?;
+            if let Ok(text) = String::from_utf8(data) {
                 lines += text.lines().count();
             }
         }
+    }
     Ok(lines)
 }