patch 8.1.0699: compiler warning for uninitialized variable

Problem:    Compiler warning for uninitialized variable. (Tony Mechelynck)
Solution:   Add a dummy init.
diff --git a/src/version.c b/src/version.c
index ec4283a..a693050 100644
--- a/src/version.c
+++ b/src/version.c
@@ -800,6 +800,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    699,
+/**/
     698,
 /**/
     697,