修复三级同时滑动时，偶然出现的数组越界

Author: imkarl

library/src/main/java/cn/jeesoft/widget/pickerview/WheelOptions.java

@@ -101,8 +101,14 @@ public void onItemSelected(int index) {
                         return;
                     }
 
-                    wv_option3.setItems(mOptions3Items.get(wv_option1.getSelectedItem()).get(index));
-                    wv_option3.setCurrentItem(0);
+                    if (wv_option1.getSelectedItem() < mOptions3Items.size()) {
+                        List<List<String>> allItems3 = mOptions3Items.get(wv_option1.getSelectedItem());
+                        if (index >= allItems3.size()) {
+                            index = 0;
+                        }
+                        wv_option3.setItems(allItems3.get(index));
+                        wv_option3.setCurrentItem(0);
+                    }
                 }
             });
         }