patch 8.2.0392: Coverity warns for using array index out of range

Problem:    Coverity warns for using array index out of range.
Solution:   Add extra "if" to avoid warning.
diff --git a/src/version.c b/src/version.c
index 78d8940..fdd9d39 100644
--- a/src/version.c
+++ b/src/version.c
@@ -739,6 +739,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    392,
+/**/
     391,
 /**/
     390,