bug fix

src/pages/building/list/add/components/modalImage.jsx

                 {getFieldDecorator('buildingArea', {
                   rules: [{ message: '请填写面积' },
                           {
-                            pattern: new RegExp('^[0-9]+\.[0-9]{2}$'),
+                            pattern: new RegExp('^[1-9][0-9]*(\.[0-9]{1,2})?$'),
                             message: '只允许输入数字',
                           },
                   ],
                   rules: [
                     // { required: true, message: '请填写套内面积' },
                           {
-                            pattern: new RegExp('^[0-9]+\.[0-9]{2}$'),
+                            pattern: new RegExp('^[1-9][0-9]*(\.[0-9]{1,2})?$'),
                             message: '只允许输入数字',
                           },
                   ],