patch 8.2.2238: Vim9: cannot load a Vim9 script without the +eval feature

Problem:    Vim9: cannot load a Vim9 script without the +eval feature.
Solution:   Support Vim9 script syntax without the +eval feature.
diff --git a/src/globals.h b/src/globals.h
index 39ef83e..dcb0f63 100644
--- a/src/globals.h
+++ b/src/globals.h
@@ -290,6 +290,14 @@
 // line number in the message source or zero
 #define SOURCING_LNUM (((estack_T *)exestack.ga_data)[exestack.ga_len - 1].es_lnum)
 
+// Script CTX being sourced or was sourced to define the current function.
+EXTERN sctx_T	current_sctx
+#ifdef FEAT_EVAL
+    INIT4(0, 0, 0, 0);
+#else
+    INIT(= {0});
+#endif
+
 #ifdef FEAT_EVAL
 // whether inside compile_def_function()
 EXTERN int	estack_compiling INIT(= FALSE);
@@ -392,9 +400,6 @@
 EXTERN int	want_garbage_collect INIT(= FALSE);
 EXTERN int	garbage_collect_at_exit INIT(= FALSE);
 
-// Script CTX being sourced or was sourced to define the current function.
-EXTERN sctx_T	current_sctx INIT4(0, 0, 0, 0);
-
 
 // Commonly used types.
 EXTERN type_T t_unknown INIT6(VAR_UNKNOWN, 0, 0, TTFLAG_STATIC, NULL, NULL);