patch 8.1.0994: relative cursor position is not calculated correctly

Problem:    Relative cursor position is not calculated correctly.
Solution:   Always set topline, also when window is one line only.
            (Robert Webb) Add more info to getwininfo() for testing.
diff --git a/src/version.c b/src/version.c
index 8722a83..6279847 100644
--- a/src/version.c
+++ b/src/version.c
@@ -780,6 +780,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    994,
+/**/
     993,
 /**/
     992,