patch 8.1.0392: error while typing :/foo/s// with 'incsearch' enabled

Problem:    Error while typing :/foo/s// with 'incsearch' enabled.
Solution:   Do not give search errors when highlighting matches.
diff --git a/src/ex_getln.c b/src/ex_getln.c
index a72b9a4..8f38331 100644
--- a/src/ex_getln.c
+++ b/src/ex_getln.c
@@ -388,7 +388,7 @@
     // parse the address range
     save_cursor = curwin->w_cursor;
     curwin->w_cursor = is_state->search_start;
-    parse_cmd_address(&ea, &dummy);
+    parse_cmd_address(&ea, &dummy, TRUE);
     if (ea.addr_count > 0)
     {
 	// Allow for reverse match.