[CMFileManager]Fix the search result does not display the file path when the result is zero

Procedures

1.Go to “File Manager”.
2.Enter a folder and Input the search button.
3.Input key words which can not be found in the folder.
4.Check the words below of the Search result.

the file path don't display when the result is zero.

Change-Id: I01ca6d34d0528fb19a5712b3fc8c05d228432173