patch 9.0.0157: 'showbreak' displayed below truncated "after" text prop

Problem:    'showbreak' displayed below truncated "after" text prop.
Solution:   Suppress 'showbreak' when "after" prop doesn't wrap.
diff --git a/src/version.c b/src/version.c
index 196f3e6..667b607 100644
--- a/src/version.c
+++ b/src/version.c
@@ -736,6 +736,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    157,
+/**/
     156,
 /**/
     155,