patch 9.0.0156: giving E1170 only in an expression is confusing

Problem:    Giving E1170 only in an expression is confusing.
Solution:   Give E1170 for any "#{ comment". (closes #10855)
diff --git a/src/version.c b/src/version.c
index b75d722..196f3e6 100644
--- a/src/version.c
+++ b/src/version.c
@@ -736,6 +736,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    156,
+/**/
     155,
 /**/
     154,