Rewind file in Storage::Fog if bucket does not exist

lib/paperclip/storage/fog.rb

@@ -117,6 +117,7 @@ def flush_writes
             raise if retried
             retried = true
             directory.save
+            file.rewind
             retry
           ensure
             file.rewind

spec/paperclip/storage/fog_spec.rb

@@ -206,6 +206,11 @@ def custom_method
           assert @dummy.save
           assert @connection.directories.get(@fog_directory)
         end
+
+        it "sucessfully rewinds the file during bucket creation" do
+          assert @dummy.save
+          expect(Paperclip.io_adapters.for(@dummy.avatar).read.length).to be > 0
+        end
       end
 
       context "with a bucket" do