patch 8.2.1065: Vim9: no line break allowed inside a list

Problem:    Vim9: no line break allowed inside a list.
Solution:   Handle line break inside a list in Vim9 script.
diff --git a/src/proto/eval.pro b/src/proto/eval.pro
index 87e4478..6ae770c 100644
--- a/src/proto/eval.pro
+++ b/src/proto/eval.pro
@@ -26,6 +26,8 @@
 void free_for_info(void *fi_void);
 void set_context_for_expression(expand_T *xp, char_u *arg, cmdidx_T cmdidx);
 int pattern_match(char_u *pat, char_u *text, int ic);
+char_u *eval_next_non_blank(char_u *arg, evalarg_T *evalarg, int *getnext);
+char_u *eval_next_line(evalarg_T *evalarg);
 int eval0(char_u *arg, typval_T *rettv, exarg_T *eap, evalarg_T *evalarg);
 int eval1(char_u **arg, typval_T *rettv, evalarg_T *evalarg);
 void eval_addblob(typval_T *tv1, typval_T *tv2);