Update ImageAnalysisQuickstart.js

[holymoly]

Purpose

Function was not defined in code.

Does this introduce a breaking change?

if now picture could be dowloaded the execution was aborted.

[x] Yes
[ ] No

Pull Request Type

I copied the function from ComputerVisionKickstart.js into this example.

[x] Bugfix
[ ] Feature
[ ] Code style update (formatting, local variables)
[ ] Refactoring (no functional changes, no api changes)
[ ] Documentation content changes
[ ] Other... Please describe:

How to Test

• Get the code

git clone [repo-address]
cd [repo-name]
git checkout [branch-name]
npm install

[ghost]

All CLA requirements met.