Run bless_tests.php on failing tests on AppVeyor

.patch

 appveyor/test_task.bat | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/appveyor/test_task.bat b/appveyor/test_task.bat
index 7c559daee9..d9b477847c 100644
--- a/appveyor/test_task.bat
+++ b/appveyor/test_task.bat
@@ -118,4 +118,10 @@ set EXIT_CODE=%errorlevel%
 
 appveyor PushArtifact %TEST_PHP_JUNIT%
 
+if %EXIT_CODE% GEQ 1 (
+	nmake run ARGS="scripts/dev/bless_tests.php ."
+	git diff > bless_tests.patch
+	appveyor PushArtifact bless_tests.patch
+)
+
 exit /b %EXIT_CODE%