Add omitted return after http.Error calls

main.go

@@ -68,6 +68,7 @@ func main() {
 		err := r.ParseForm()
 		if err != nil {
 			http.Error(w, "Could not parse form", http.StatusInternalServerError)
+			return
 		}
 		sidewalkID, err := strconv.Atoi(r.PathValue("id"))
 		if err != nil {
@@ -77,6 +78,7 @@ func main() {
 		condition, err := strconv.Atoi(r.Form.Get("condition"))
 		if err != nil {
 			http.Error(w, "Invalid condition", http.StatusBadRequest)
+			return
 		}
 		sidewalksMutex.Lock()
 		sidewalks[sidewalkID].Condition = sidewalk.Condition(condition)