Fix gallery build ruby script (#16121)

* Fix gallery build ruby script

* Also print a message when not deploying

dev/bots/travis_script.sh

@@ -29,6 +29,7 @@ if [ "$SHARD" = "build_and_deploy_gallery" ]; then
       else
         echo "Archiving with distribution profile..."
         (cd examples/flutter_gallery/ios; bundle install && bundle exec fastlane build_and_deploy_testflight)
+        echo "Archive is only deployed to TestFlight on tagged dev branch commits"
       fi
     else
       echo "Flutter Gallery is only deployed to the TestFlight on merged and tagged dev branch commits"

examples/flutter_gallery/ios/fastlane/Fastfile

@@ -73,7 +73,7 @@ platform :ios do |options|
       codesigning_identity: 'iPhone Distribution: Store Ladd (S8QB4VV633)',
     )
 
-    if options[:upload]
+    if options && options[:upload]
       upload_to_testflight
     end
   end