Fail vdl test if virtual device fails to launch.

This fixes https://fxbug.dev/81182.

See: https://flutter-review.googlesource.com/c/recipes/+/15861

Change-Id: I2fc3f5924a727483fb49ab65e8e4e7538467e33d
Reviewed-on: https://flutter-review.googlesource.com/c/recipes/+/15840
Reviewed-by: David Worsham <dworsham@google.com>
Commit-Queue: Darren Chan <chandarren@google.com>
diff --git a/recipes/femu_test.resources/run_vdl_test.sh b/recipes/femu_test.resources/run_vdl_test.sh
index c33fb25..cdaa499 100644
--- a/recipes/femu_test.resources/run_vdl_test.sh
+++ b/recipes/femu_test.resources/run_vdl_test.sh
@@ -149,6 +149,7 @@
   _TEST_EXIT_CODE=$?
 else
   log "Failed to launch virtual device. Exit code ${_LAUNCH_EXIT_CODE}"
+  exit 1
 fi
 
 if [[ ${_TEST_EXIT_CODE} == 0 ]]; then