patch 8.1.0734: the hlsearch state is not stored in a session file

Problem:    The hlsearch state is not stored in a session file.
Solution:   Add "nohlsearch" if appropriate. (Jason Franklin)
diff --git a/src/version.c b/src/version.c
index a967fea..11b555f 100644
--- a/src/version.c
+++ b/src/version.c
@@ -796,6 +796,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    734,
+/**/
     733,
 /**/
     732,