fixed bug when UTZ offset is 00:00. Fixes #241.
fixed bug when UTZ offset is 00:00. Fixes #241.

parkhyeonghwa/mtools,gormanb/mtools,tomzhang/mtools,devkev/mtools,gormanb/mtools,devkev/mtools,tomzhang/mtools,aerrami/mtools,ces0712/mtools,yaowenqiang/mtools,parkhyeonghwa/mtools,rueckstiess/mtools,ces0712/mtools,rueckstiess/mtools,gormanb/mtools,devkev/mtools,yaowenqiang/mtools,parkhyeonghwa/mtools,aerrami/mtools,aerrami/mtools,yaowenqiang/mtools,ces0712/mtools,tomzhang/mtools