patch 8.2.1309: build failure with tiny version

Problem:    Build failure with tiny version.
Solution:   Add #ifdef.
diff --git a/src/ex_docmd.c b/src/ex_docmd.c
index fe65410..6a2e91c 100644
--- a/src/ex_docmd.c
+++ b/src/ex_docmd.c
@@ -5686,8 +5686,10 @@
     static void
 ex_exit(exarg_T *eap)
 {
+#ifdef FEAT_EVAL
     if (not_in_vim9(eap) == FAIL)
 	return;
+#endif
 #ifdef FEAT_CMDWIN
     if (cmdwin_type != 0)
     {