patch 9.0.1189: invalid memory access with folding and using "L"

Problem:    Invalid memory access with folding and using "L".
Solution:   Prevent the cursor from moving to line zero.
diff --git a/src/version.c b/src/version.c
index 1d81e7b..64f7d88 100644
--- a/src/version.c
+++ b/src/version.c
@@ -696,6 +696,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    1189,
+/**/
     1188,
 /**/
     1187,