Minor update

Author: vshand11

src/common/s3util.py

@@ -82,7 +82,11 @@ def get_object_size(self, key):
                 return None, msg  
 
     def same_size_file_exists(self, key, file_size):
-        return file_size == self.get_object_size(key)
+        file_size, msg = self.get_object_size(key)
+        if msg:
+            self.log.error(msg)
+            return None
+        return file_size
 
     def download_object(self, key, local_file_path):
         try: