patch 7.4.2324
Problem:    Crash when editing a new buffer and BufUnload autocommand wipes
            out the new buffer. (Norio Takagi)
Solution:   Don't allow wiping out this buffer. (partly by Hirohito Higashi)
            Move old style test13 into test_autocmd. Avoid ml_get error when
            editing a file.
diff --git a/src/Makefile b/src/Makefile
index b201ed4..a56aa04 100644
--- a/src/Makefile
+++ b/src/Makefile
@@ -2042,7 +2042,7 @@
 	test_utf8 \
 	test_wordcount \
 	test2 test3 test4 test5 test6 test7 test8 test9 \
-	test11 test12 test13 test14 test15 test17 test18 test19 \
+	test11 test12 test14 test15 test17 test18 test19 \
 	test20 test21 test22 test23 test24 test25 test26 test27 test28 test29 \
 	test30 test31 test32 test33 test34 test36 test37 test38 test39 \
 	test40 test41 test42 test43 test44 test45 test48 test49 \