Fix misspell and ineffassign

Author: Sergio Andres Virviescas Santana

examples/hosts/hosts.go

@@ -30,7 +30,7 @@ func (hs HostSwitch) CheckHost(ctx *fasthttp.RequestCtx) {
 	if handler := hs[string(ctx.Host())]; handler != nil {
 		handler(ctx)
 	} else {
-		// Handle host names for wich no handler is registered
+		// Handle host names for which no handler is registered
 		ctx.Error("Forbidden", 403) // Or Redirect?
 	}
 }

router_test.go

@@ -784,7 +784,7 @@ func TestRouterLookup(t *testing.T) {
 	// insert route and try again
 	r.GET("/user/:name", wantHandle)
 
-	handle, tsr = r.Lookup("GET", "/user/gopher", ctx)
+	handle, _ = r.Lookup("GET", "/user/gopher", ctx)
 	if handle == nil {
 		t.Fatal("Got no handle!")
 	} else {