patch 7.4.1751
Problem:    Crash when 'tagstack' is off. (Dominique Pelle)
Solution:   Fix it. (Hirohito Higashi)
diff --git a/src/version.c b/src/version.c
index 695d0b7..7918d99 100644
--- a/src/version.c
+++ b/src/version.c
@@ -749,6 +749,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    1751,
+/**/
     1750,
 /**/
     1749,