Update app/models/concerns/foreman_remote_execution/smart_proxy_extensions.rb

Co-authored-by: Adam Růžička <[email protected]>

Author: adamlazik1

app/models/concerns/foreman_remote_execution/smart_proxy_extensions.rb

@@ -26,9 +26,8 @@ def update_pubkey
     def update_ca_pubkey
       return unless has_feature?(%w(SSH Script))
 
-      key = ::ProxyAPI::RemoteExecutionSSH.new(:url => url).ca_pubkey
       # smart proxy is not required to have a CA pubkey, in which case an empty string is returned
-      key = nil if key == ""
+      key = ::ProxyAPI::RemoteExecutionSSH.new(:url => url).ca_pubkey&.presence
       self.update_attribute(:ca_pubkey, key)
       key
     end