patch 8.2.1579: reports from asan are not optimal

Problem:    Reports from asan are not optimal.
Solution:   Use clang with ubsan. (James McCoy, closes #6811)
diff --git a/src/version.c b/src/version.c
index 12d49bb..f9198c7 100644
--- a/src/version.c
+++ b/src/version.c
@@ -755,6 +755,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    1579,
+/**/
     1578,
 /**/
     1577,