Don't throw twice on IE/Edge
Don't throw twice on IE/Edge

dfahlander/Dexie.js,jimmywarting/Dexie.js,jimmywarting/Dexie.js,chrahunt/Dexie.js,jimmywarting/Dexie.js,dfahlander/Dexie.js,chrahunt/Dexie.js,dfahlander/Dexie.js,dfahlander/Dexie.js,chrahunt/Dexie.js,jimmywarting/Dexie.js,chrahunt/Dexie.js