Fix type errors in ecfs.rs and apply clippy fixes for Rust 1.92.0 (#1121)

rustfs/src/storage/concurrency.rs

@@ -1651,6 +1651,7 @@ pub fn get_concurrency_manager() -> &'static ConcurrencyManager {
 }
 
 /// Testing helper to reset the global request counter.
+#[allow(dead_code)]
 pub(crate) fn reset_active_get_requests() {
     ACTIVE_GET_REQUESTS.store(0, Ordering::Relaxed);
 }

rustfs/src/storage/ecfs.rs

@@ -2460,7 +2460,7 @@ impl S3 for FS {
             .clone()
             .or_else(|| metadata_map.get("x-amz-storage-class").cloned())
             .filter(|s| !s.is_empty())
-            .map(ObjectStorageClass::from);
+            .map(StorageClass::from);
 
         let mut checksum_crc32 = None;
         let mut checksum_crc32c = None;