Fix errors

ctru-rs/src/services/romfs.rs

@@ -89,7 +89,7 @@ mod tests {
     #[should_panic]
     fn romfs_lock() {
         let romfs = RomFS::new().unwrap();
-      
+
         ROMFS_ACTIVE.try_lock().unwrap();
 
         drop(romfs);

ctru-sys/build.rs

@@ -169,7 +169,7 @@ fn check_libctru_version() -> Result<(String, String, String), Box<dyn Error>> {
         .expect("crate version should have '+' delimeter");
 
     if lib_version != crate_built_version {
-        Err(format!(
+        return Err(format!(
             "libctru version is {lib_version} but this crate was built for {crate_built_version}"
         )
         .into());