patch 8.2.2186: Vim9: error when using 'opfunc'
Problem: Vim9: error when using 'opfunc'.
Solution: Do not expect a return value from 'opfunc'. (closes #7510)
diff --git a/src/proto/eval.pro b/src/proto/eval.pro
index b1a2c0f..8fa908c 100644
--- a/src/proto/eval.pro
+++ b/src/proto/eval.pro
@@ -18,6 +18,7 @@
typval_T *eval_expr(char_u *arg, exarg_T *eap);
int call_vim_function(char_u *func, int argc, typval_T *argv, typval_T *rettv);
varnumber_T call_func_retnr(char_u *func, int argc, typval_T *argv);
+int call_func_noret(char_u *func, int argc, typval_T *argv);
void *call_func_retstr(char_u *func, int argc, typval_T *argv);
void *call_func_retlist(char_u *func, int argc, typval_T *argv);
int eval_foldexpr(char_u *arg, int *cp);