Removed pointless initialization to 0 of DIR fields

after having added memset. 
Thanks to Peter Mazinger for pointing this out.

Signed-off-by: Carmelo Amoroso <carmelo.amoroso@st.com>

libc/misc/dirent/opendir.c

@@ -66,7 +66,6 @@ close_and_ret:
 
 	memset(ptr, '\0', sizeof(DIR));
 	ptr->dd_fd = fd;
-	ptr->dd_nextloc = ptr->dd_size = ptr->dd_nextoff = 0;
 
 	ptr->dd_max = statbuf.st_blksize;
 	if (ptr->dd_max < 512)