Fixes bugfix/59 (infinite loop in incrementally export API)
Fixes bugfix/59 (infinite loop in incrementally export API)

kuisathaverat/zendesk-java-client,vector-portal-team/zendesk-java-client,cloudbees/zendesk-java-client,norrisjeremy/zendesk-java-client,matthewtckr/zendesk-java-client,gvh1234/zendesk-java-client,jon-ruckwood/zendesk-java-client,christ66/zendesk-java-client,ydubreuil/zendesk-java-client