Improve the search_for utilty function and reduce the nested code

src/main.rs

@@ -2,6 +2,7 @@
 
 mod arguments;
 mod cmus;
+mod utils;
 
 use clap::Parser;
 

src/utils.rs

@@ -11,8 +11,8 @@ pub fn search_for(
 ) -> std::io::Result<Option<String>> {
     // Search in the track directory.
     for entry in std::fs::read_dir(search_directory)? {
-        if let Ok(entry) = entry {
-            if let Ok(file_type) = entry.file_type() {
+        let Ok(entry) = entry else { continue; };
+        let Ok(file_type) = entry.file_type() else { continue; };
         if file_type.is_file() {
             let Ok(file_name) = entry.file_name().into_string() else { continue; };
             // Check if the file name matches any of the regular expressions.
@@ -23,8 +23,6 @@ pub fn search_for(
             }
         }
     }
-        }
-    }
     // If the max depth is reached, return `None`.
     if max_depth == 0 {
         Ok(None)