patch 9.1.2012: Vim9: cannot initialize class member with protected var

Problem:  Vim9: cannot initialize class member with protected var
Solution: Allow this to work if this happens within the same class
          (Foxe Chen)

closes: #18949

Signed-off-by: Foxe Chen <chen.foxe@gmail.com>
Signed-off-by: Christian Brabandt <cb@256bit.org>

src/eval.c

@@ -131,6 +131,7 @@ fill_evalarg_from_eap(evalarg_T *evalarg, exarg_T *eap, int skip)
 	evalarg->eval_getline = eap->ea_getline;
 	evalarg->eval_cookie = eap->cookie;
     }
+    evalarg->eval_class = eap->class;
 }
 
 /*