patch 8.1.1490: when a single test fails the exit code is not set

Problem:    When a single test fails the exit code is not set. (Daniel Hahler)
Solution:   Add an exit command. (closes #4506)

src/testdir/Makefile

@@ -74,10 +74,10 @@ $(SCRIPTS) $(SCRIPTS_GUI) $(NEW_TESTS_RES): $(SCRIPTS_FIRST)
 $(NEW_TESTS):
 	rm -f $@.res test.log messages
 	$(MAKE) -f Makefile $@.res
-	@if test -f test.log; then \
-		cat test.log; \
-	fi
 	cat messages
+	@if test -f test.log; then \
+		exit 1; \
+	fi
 
 RM_ON_RUN = test.out X* viminfo
 RM_ON_START = tiny.vim small.vim mbyte.vim mzscheme.vim test.ok benchmark.out

src/version.c

@@ -767,6 +767,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    1490,
 /**/
     1489,
 /**/