patch 9.0.0500: when quitting cmdline window with CTRL-C it remains visible

Problem:    When quitting the cmdline window with CTRL-C it remains visible.
Solution:   Redraw to avoid confusion. Adjust the error message.
            (closes #11152)  Adjust the cursor position after CTRL-C.
diff --git a/src/version.c b/src/version.c
index 415897a..a167c38 100644
--- a/src/version.c
+++ b/src/version.c
@@ -700,6 +700,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    500,
+/**/
     499,
 /**/
     498,