fix: specify type parameter for cookie.load

Co-authored-by: aider (openai/andrew/openrouter/anthropic/claude-sonnet-4) <aider@aider.chat>

src/meta_plugin/magic.rs

@@ -52,7 +52,7 @@ impl MetaPlugin for MagicMetaPlugin {
         let cookie = Cookie::open(self.cookie_flags)
             .map_err(|e| io::Error::new(io::ErrorKind::Other, format!("Failed to open magic cookie: {}", e)))?;
 
-        cookie.load(&[])
+        cookie.load(&[] as &[&str])
             .map_err(|e| io::Error::new(io::ErrorKind::Other, format!("Failed to load magic database: {}", e)))?;
 
         let result = cookie.buffer(&self.buffer)