[iOS] Fix  a bug that cause a {0,0} size image
[iOS] Fix  a bug that cause a {0,0} size image

-[origin] if ([maxWidth integerValue] == 0 || [maxHeight integerValue] == 0) {
-when pick a width< height image and only set "compressImageMaxWidth",will cause a {0,0}size image
-Now fix it
zoofei/react-native-my-image-crop-picker,zoofei/react-native-my-image-crop-picker,zoofei/react-native-my-image-crop-picker,ivpusic/react-native-image-crop-picker,ropc/react-native-image-crop-picker,nico1510/react-native-image-crop-picker,ropc/react-native-image-crop-picker,ivpusic/react-native-image-crop-picker,ropc/react-native-image-crop-picker,nico1510/react-native-image-crop-picker,ivpusic/react-native-image-crop-picker,nico1510/react-native-image-crop-picker,ropc/react-native-image-crop-picker,nico1510/react-native-image-crop-picker,zoofei/react-native-my-image-crop-picker