patch 9.0.1095: using freed memory when declaration fails

Problem:    Using freed memory when declaration fails. (Yegappan Lakshmanan)
Solution:   After unreferencing an object set the reference to NULL.
diff --git a/src/version.c b/src/version.c
index 95d2a6b..36d3f81 100644
--- a/src/version.c
+++ b/src/version.c
@@ -696,6 +696,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    1095,
+/**/
     1094,
 /**/
     1093,