When saving an edited site or default settings, WinSCP prompted for the master password, even when the site does not have any password to protect

Caused by 0ccd2def.

Source commit: d6f120c5c92a4a16310a746efda75dbe40dfdcdf

source/core/SessionData.cpp

@@ -1596,7 +1596,7 @@ bool __fastcall TSessionData::HasAnyPassword()
     HasAnySessionPassword() ||
     !FProxyPassword.IsEmpty() ||
     // will probably be never used
-    FNewPassword.IsEmpty();
+    !FNewPassword.IsEmpty();
 }
 //---------------------------------------------------------------------
 void __fastcall TSessionData::ClearSessionPasswords()