patch 8.1.0364: compiler warning in xdiff code

Problem:    Compiler warning in xdiff code. (Yegappan Lakshmanan)
Solution:   Initialize directly.
diff --git a/src/version.c b/src/version.c
index 853c86f..0654c29 100644
--- a/src/version.c
+++ b/src/version.c
@@ -795,6 +795,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    364,
+/**/
     363,
 /**/
     362,