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/drawline.c b/src/drawline.c
index 6024bad..26b52d3 100644
--- a/src/drawline.c
+++ b/src/drawline.c
@@ -1722,7 +1722,7 @@
 				// don't combine char attr after EOL
 				text_prop_flags &= ~PT_FLAG_COMBINE;
 #ifdef FEAT_LINEBREAK
-			    if (below || right)
+			    if (below || right || !wrap)
 			    {
 				// no 'showbreak' before "below" text property
 				// or after "right" text property