patch 8.1.1359: text property wrong after :substitute with backslash

Problem:    Text property wrong after :substitute with backslash.
Solution:   Adjust text property columns when removing backslashes.
            (closes #4397)
diff --git a/src/change.c b/src/change.c
index fa8c425..b43ba35 100644
--- a/src/change.c
+++ b/src/change.c
@@ -684,7 +684,7 @@
 {
 #ifdef FEAT_TEXT_PROP
     if (curbuf->b_has_textprop && added != 0)
-	adjust_prop_columns(lnum, col, added, FALSE);
+	adjust_prop_columns(lnum, col, added, 0);
 #endif
 
     changed_bytes(lnum, col);