Fix wrong usage of getImageData and Permanent ImageHandle creation#2964

HeikoKlare merged 1 commit intoeclipse-platform:mastereclipse-platform/eclipse.platform.swt:masterfrom

vi-eclipse:amartya4256/fix_image_get_imageData_usagevi-eclipse/eclipse.platform.swt:amartya4256/fix_image_get_imageData_usageCopy head branch name to clipboard