smb3: fix compiler warning in reparse code

utf8s_to_utf16s() specifies pwcs as a wchar_t pointer (whether big endian
or little endian is passed in as an additional parm), so to remove a
distracting compile warning it needs to be cast as (wchar_t *) in
parse_reparse_wsl_symlink() as done by other callers.

Fixes: 06a7adf ("cifs: Add support for parsing WSL-style symlinks")
Reviewed-by: Pali Rohár <pali@kernel.org>
Signed-off-by: Steve French <stfrench@microsoft.com>

Author: smfrench

fs/smb/client/reparse.c

@@ -676,7 +676,7 @@ static int parse_reparse_wsl_symlink(struct reparse_wsl_symlink_data_buffer *buf
 		return -ENOMEM;
 	symname_utf16_len = utf8s_to_utf16s(buf->PathBuffer, symname_utf8_len,
 					    UTF16_LITTLE_ENDIAN,
-					    symname_utf16, symname_utf8_len * 2);
+					    (wchar_t *) symname_utf16, symname_utf8_len * 2);
 	if (symname_utf16_len < 0) {
 		kfree(symname_utf16);
 		return symname_utf16_len;