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/buffer.c b/src/buffer.c
index b3889b7..c14aefb 100644
--- a/src/buffer.c
+++ b/src/buffer.c
@@ -5371,9 +5371,8 @@
     int		vers;
     int		end;
     int		retval = OK;
-#ifdef FEAT_EVAL
     sctx_T	save_current_sctx;
-#endif
+
     ESTACK_CHECK_DECLARATION
 
     prev = -1;
@@ -5457,22 +5456,22 @@
 	    if (*s != NUL)		// skip over an empty "::"
 	    {
 		int secure_save = secure;
-#ifdef FEAT_EVAL
+
 		save_current_sctx = current_sctx;
+		current_sctx.sc_version = 1;
+#ifdef FEAT_EVAL
 		current_sctx.sc_sid = SID_MODELINE;
 		current_sctx.sc_seq = 0;
 		current_sctx.sc_lnum = lnum;
-		current_sctx.sc_version = 1;
 #endif
+
 		// Make sure no risky things are executed as a side effect.
 		secure = 1;
 
 		retval = do_set(s, OPT_MODELINE | OPT_LOCAL | flags);
 
 		secure = secure_save;
-#ifdef FEAT_EVAL
 		current_sctx = save_current_sctx;
-#endif
 		if (retval == FAIL)		// stop if error found
 		    break;
 	    }