patch 9.0.1542: line not fully displayed if it doesn't fit in the screen

Problem:    Line not fully displayed if it doesn't fit in the screen.
Solution:   Do not reset s_skipcol if not needed. (Luuk van Baal,
            closes #12376)
diff --git a/src/version.c b/src/version.c
index c917be5..4c70def 100644
--- a/src/version.c
+++ b/src/version.c
@@ -696,6 +696,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    1542,
+/**/
     1541,
 /**/
     1540,