Fix lint and code issue.
diff --git a/libcloud/storage/drivers/local.py b/libcloud/storage/drivers/local.py
index 12e948a..96330a2 100644
--- a/libcloud/storage/drivers/local.py
+++ b/libcloud/storage/drivers/local.py
@@ -73,7 +73,7 @@
         end_time = start_time + lock_acquire_timeout
 
         while int(time.time()) < end_time:
-            success = self.thread_lock.acquire(blocking=True)
+            success = self.thread_lock.acquire(blocking=False)
 
             if success:
                 break