fix typo

internal/server/middleware.go

@@ -49,25 +49,25 @@ func (l *Limiter) ServeHTTP(w http.ResponseWriter, r *http.Request, next http.Ha
 		return
 	}
 
-	clintIP := getClientIPFromRequest(l.proxyCount, r)
+	clientIP := getClientIPFromRequest(l.proxyCount, r)
 	l.mutex.Lock()
-	if l.limitByKey(w, address) || l.limitByKey(w, clintIP) {
+	if l.limitByKey(w, address) || l.limitByKey(w, clientIP) {
 		l.mutex.Unlock()
 		return
 	}
 	l.cache.SetWithTTL(address, true, l.ttl)
-	l.cache.SetWithTTL(clintIP, true, l.ttl)
+	l.cache.SetWithTTL(clientIP, true, l.ttl)
 	l.mutex.Unlock()
 
 	next.ServeHTTP(w, r)
 	if w.(negroni.ResponseWriter).Status() != http.StatusOK {
 		l.cache.Remove(address)
-		l.cache.Remove(clintIP)
+		l.cache.Remove(clientIP)
 		return
 	}
 	log.WithFields(log.Fields{
 		"address":  address,
-		"clientIP": clintIP,
+		"clientIP": clientIP,
 	}).Info("Maximum request limit has been reached")
 }