prefer AES CTR over GCM to make old servers happy

Author: palmin

src/crypt.c

@@ -340,16 +340,17 @@ static const LIBSSH2_CRYPT_METHOD libssh2_crypt_method_3des_cbc = {
 #endif
 
 static const LIBSSH2_CRYPT_METHOD *_libssh2_crypt_methods[] = {
-#if LIBSSH2_AES_GCM
-  &libssh2_crypt_method_aes256_gcm,
-  &libssh2_crypt_method_aes128_gcm,
-#endif /* LIBSSH2_AES_GCM */
-
 #if LIBSSH2_AES_CTR
   &libssh2_crypt_method_aes128_ctr,
   &libssh2_crypt_method_aes192_ctr,
   &libssh2_crypt_method_aes256_ctr,
 #endif /* LIBSSH2_AES */
+
+#if LIBSSH2_AES_GCM
+  &libssh2_crypt_method_aes256_gcm,
+  &libssh2_crypt_method_aes128_gcm,
+#endif /* LIBSSH2_AES_GCM */
+
 #if LIBSSH2_AES
     &libssh2_crypt_method_aes256_cbc,
     &libssh2_crypt_method_rijndael_cbc_lysator_liu_se,  /* == aes256-cbc */