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/ops.c b/src/ops.c
index a989ce2..4d26924 100644
--- a/src/ops.c
+++ b/src/ops.c
@@ -1937,7 +1937,7 @@
 
 #ifdef FEAT_TEXT_PROP
 	    if (curbuf->b_has_textprop && n != 0)
-		adjust_prop_columns(lnum, bd.textcol, -n, FALSE);
+		adjust_prop_columns(lnum, bd.textcol, -n, 0);
 #endif
 	}