debugfs: with ls -l, include space between size and date

Before:
     11   40700 (2)      0      0   1228812-Feb-2017 12:51 lost+found

After:
     11   40700 (2)      0      0   12288 12-Feb-2017 12:51 lost+found

Fixes: 68a1de3df340 ("debugfs: pretty print encrypted filenames in the ls command")
Signed-off-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Reviewed-by: Andreas Dilger <adilger@dilger.ca>
diff --git a/debugfs/ls.c b/debugfs/ls.c
index 057e3f6..c990a93 100644
--- a/debugfs/ls.c
+++ b/debugfs/ls.c
@@ -156,8 +156,7 @@
 			fprintf(ls->f, "%5d", inode.i_size);
 		else
 			fprintf(ls->f, "%5llu", EXT2_I_SIZE(&inode));
-		fputs(datestr, ls->f);
-		fputc(' ', ls->f);
+		fprintf(ls->f, " %s ", datestr);
 		print_filename(ls->f, dirent, options);
 		fputc('\n', ls->f);
 	} else {