patch 8.1.2146: build failure

Problem:    Build failure.
Solution:   Include omitted changed file.
diff --git a/src/optionstr.c b/src/optionstr.c
index 925ea59..a5b5b55 100644
--- a/src/optionstr.c
+++ b/src/optionstr.c
@@ -1892,7 +1892,8 @@
     {
 	if (*p_pt)
 	{
-	    (void)replace_termcodes(p_pt, &p, TRUE, TRUE, FALSE);
+	    (void)replace_termcodes(p_pt, &p,
+				      REPTERM_FROM_PART | REPTERM_DO_LT, NULL);
 	    if (p != NULL)
 	    {
 		if (new_value_alloced)