patch 9.1.0713: Newline causes E749 in Ex mode

Problem:  Newline causes E749 in Ex mode (after 9.1.0573).
Solution: Don't execute empty command followed by a newline.

closes: #15614

Signed-off-by: zeertzjq <zeertzjq@outlook.com>
Signed-off-by: Christian Brabandt <cb@256bit.org>
diff --git a/src/version.c b/src/version.c
index 1ba85a9..f53da01 100644
--- a/src/version.c
+++ b/src/version.c
@@ -705,6 +705,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    713,
+/**/
     712,
 /**/
     711,