Update dircache startcluster at file close when writing. Fixes bug when creating small files (dircache startcluster remains 0 because fat write doesn't occur until close).

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@9950 a1c6a512-1295-4272-9138-f99709370657

firmware/common/file.c

@@ -249,6 +249,9 @@ int close(int fd)
         rc = fsync(fd);
         if (rc < 0)
             return rc * 10 - 3;
+#ifdef HAVE_DIRCACHE
+        dircache_update_filesize(fd, file->size, file->fatfile.firstcluster);
+#endif
     }
 
     file->busy = false;