[CIFS] suppress duplicate warning

fs/cifs/dir.c: In function 'cifs_ci_compare':
fs/cifs/dir.c:582: warning: passing argument 1 of 'memcpy' discards
qualifiers from pointer target type
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Steve French <sfrench@us.ibm.com>

fs/cifs/dir.c

@@ -608,7 +608,7 @@ static int cifs_ci_compare(struct dentry *dentry, struct qstr *a,
 		 * case take precedence.  If a is not a negative dentry, this
 		 * should have no side effects
 		 */
-		memcpy(a->name, b->name, a->len);
+		memcpy((void *)a->name, b->name, a->len);
 		return 0;
 	}
 	return 1;