Fixed incorrect offset logic that caused chart out-of-order issue.#5

Fail-Safe merged 1 commit intomasterFail-Safe/netdata-chart-sqm:masterfrom

bugfix/chart-order-incorrect-more-than-two-interfacesFail-Safe/netdata-chart-sqm:bugfix/chart-order-incorrect-more-than-two-interfacesCopy head branch name to clipboard