patch 8.0.1499: out-of-memory situation not correctly handled

Problem:    Out-of-memory situation not correctly handled. (Coverity)
Solution:   Check for NULL value.
diff --git a/src/version.c b/src/version.c
index 97d2390..a7cc0e4 100644
--- a/src/version.c
+++ b/src/version.c
@@ -772,6 +772,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    1499,
+/**/
     1498,
 /**/
     1497,