patch 9.0.0540: assigning stack variable to argument confuses Coverity

Problem:    Assigning stack variable to argument confuses Coverity.
Solution:   Use a local pointer, also makes the code simpler.
diff --git a/src/version.c b/src/version.c
index 359c70c..a9c99e8 100644
--- a/src/version.c
+++ b/src/version.c
@@ -700,6 +700,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    540,
+/**/
     539,
 /**/
     538,