patch 8.2.0517: Vim9: cannot separate "func" and "func(): void"

Problem:    Vim9: cannot separate "func" and "func(): void".
Solution:   Use VAR_ANY for "any" and VAR_UNKNOWN for "no type".
diff --git a/src/if_py_both.h b/src/if_py_both.h
index 0d70de2..77ec4a9 100644
--- a/src/if_py_both.h
+++ b/src/if_py_both.h
@@ -6390,6 +6390,7 @@
 		(char*) tv->vval.v_blob->bv_ga.ga_data,
 		(Py_ssize_t) tv->vval.v_blob->bv_ga.ga_len);
 	case VAR_UNKNOWN:
+	case VAR_ANY:
 	case VAR_VOID:
 	case VAR_CHANNEL:
 	case VAR_JOB: