patch 8.2.4672: using :normal with Ex mode may make :substitute hang

Problem:    Using :normal with Ex mode may make :substitute hang.
Solution:   When getting an empty line behave like 'q' was typed.
            (closes #10070)
diff --git a/src/version.c b/src/version.c
index c6111fc..3fec52e 100644
--- a/src/version.c
+++ b/src/version.c
@@ -751,6 +751,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    4672,
+/**/
     4671,
 /**/
     4670,