patch 9.0.0998: "gk" may reset skipcol when not needed

Problem:    "gk" may reset skipcol when not needed.
Solution:   Only reset skipcol if the cursor column is less.
diff --git a/src/version.c b/src/version.c
index 682beb0..da9b03a 100644
--- a/src/version.c
+++ b/src/version.c
@@ -696,6 +696,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    998,
+/**/
     997,
 /**/
     996,