patch 8.0.0889: gcc gives warnings for uninitialized variables

Problem:    Gcc gives warnings for uninitialized variables. (Tony Mechelynck)
Solution:   Initialize variables even though they are not used.
diff --git a/src/version.c b/src/version.c
index 5a1660a..e5cafdc 100644
--- a/src/version.c
+++ b/src/version.c
@@ -770,6 +770,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    889,
+/**/
     888,
 /**/
     887,