patch 8.2.3930: getcmdline() argument has a misleading type

Problem:    getcmdline() argument has a misleading type.
Solution:   Use the correct type, even though the value is not used.
diff --git a/src/ex_docmd.c b/src/ex_docmd.c
index 20b2457..d4c725c 100644
--- a/src/ex_docmd.c
+++ b/src/ex_docmd.c
@@ -1467,7 +1467,7 @@
 
 	// First time inside the ":while"/":for": get line normally.
 	if (cp->getline == NULL)
-	    line = getcmdline(c, 0L, indent, options);
+	    line = getcmdline(c, 0L, indent, 0);
 	else
 	    line = cp->getline(c, cp->cookie, indent, options);
 	if (line != NULL && store_loop_line(cp->lines_gap, line) == OK)