Update events.js

Extensions/combined/src/events.js

@@ -43,7 +43,7 @@ function likeClicked() {
   if (checkForSignInButton() === false) {
     if (storedData.previousState === DISLIKED_STATE) {
       sendVote(1);
-      storedData.dislikes--;
+      if (storedData.dislikes > 0) storedData.dislikes--;
       storedData.likes++;
       createRateBar(storedData.likes, storedData.dislikes);
       setDislikes(numberFormat(storedData.dislikes));
@@ -72,7 +72,7 @@ function dislikeClicked() {
       storedData.previousState = DISLIKED_STATE;
     } else if (storedData.previousState === DISLIKED_STATE) {
       sendVote(0);
-      storedData.dislikes--;
+      if (storedData.dislikes > 0) storedData.dislikes--;
       setDislikes(numberFormat(storedData.dislikes));
       createRateBar(storedData.likes, storedData.dislikes);
       storedData.previousState = NEUTRAL_STATE;
@@ -113,4 +113,4 @@ export {
   dislikeClicked,
   addLikeDislikeEventListener,
   storageChangeHandler,
-};
+};