patch 8.2.1142: Vim9: return type of insert() is any
Problem: Vim9: return type of insert() is any.
Solution: Use type of the first argument.
diff --git a/src/evalfunc.c b/src/evalfunc.c
index b015f6d..65c34cd 100644
--- a/src/evalfunc.c
+++ b/src/evalfunc.c
@@ -667,7 +667,7 @@
{"inputrestore", 0, 0, 0, ret_number, f_inputrestore},
{"inputsave", 0, 0, 0, ret_number, f_inputsave},
{"inputsecret", 1, 2, FEARG_1, ret_string, f_inputsecret},
- {"insert", 2, 3, FEARG_1, ret_any, f_insert},
+ {"insert", 2, 3, FEARG_1, ret_first_arg, f_insert},
{"interrupt", 0, 0, 0, ret_void, f_interrupt},
{"invert", 1, 1, FEARG_1, ret_number, f_invert},
{"isdirectory", 1, 1, FEARG_1, ret_number, f_isdirectory},