Fixes #37610 - pass the unencrypted root_pass to crypt for grub_pass

self.root_pass can be already encrypted, and in the case of
Base64(-Windows) we do not reliably detect that. And even if, using B64
for GRUB wouldn't work anyway.

Fixes: 60d53c2

app/models/concerns/host_common.rb

@@ -152,8 +152,9 @@ def image_file
   end
 
   def crypt_passwords
-    self.root_pass = crypt_pass(self[:root_pass], :root)
-    self.grub_pass = crypt_pass(self[:grub_pass] || self[:root_pass], :grub)
+    root_pass = self[:root_pass]
+    self.root_pass = crypt_pass(root_pass, :root)
+    self.grub_pass = crypt_pass(self[:grub_pass] || root_pass, :grub)
   end
 
   def crypt_pass(unencrypted_pass, pass_kind)