patch 8.2.4038: various code not used when features are disabled

Problem:    Various code not used when features are disabled.
Solution:   Add #ifdefs. (Dominique Pellé, closes #9491)
diff --git a/src/scriptfile.c b/src/scriptfile.c
index 4256b39..8fb3cae 100644
--- a/src/scriptfile.c
+++ b/src/scriptfile.c
@@ -1635,8 +1635,6 @@
 }
 # endif
 
-#endif
-
     linenr_T
 get_sourced_lnum(
 	char_u *(*fgetline)(int, void *, int, getline_opt_T),
@@ -1646,6 +1644,7 @@
 			? ((source_cookie_T *)cookie)->sourcing_lnum
 			: SOURCING_LNUM;
 }
+#endif
 
     static char_u *
 get_one_sourceline(source_cookie_T *sp)