patch 8.2.3022: available encryption methods are not strong enough

Problem:    Available encryption methods are not strong enough.
Solution:   Add initial support for xchaha20. (Christian Brabandt,
            closes #8394)
diff --git a/src/proto/blowfish.pro b/src/proto/blowfish.pro
index 5998fb3..6b2c454 100644
--- a/src/proto/blowfish.pro
+++ b/src/proto/blowfish.pro
@@ -1,6 +1,6 @@
 /* blowfish.c */
-void crypt_blowfish_encode(cryptstate_T *state, char_u *from, size_t len, char_u *to);
-void crypt_blowfish_decode(cryptstate_T *state, char_u *from, size_t len, char_u *to);
+void crypt_blowfish_encode(cryptstate_T *state, char_u *from, size_t len, char_u *to, int last);
+void crypt_blowfish_decode(cryptstate_T *state, char_u *from, size_t len, char_u *to, int last);
 int crypt_blowfish_init(cryptstate_T *state, char_u *key, char_u *salt, int salt_len, char_u *seed, int seed_len);
 int blowfish_self_test(void);
 /* vim: set ft=c : */