Panic on refresh_token

[miko-code]

Hi ,
Im trying to run the refresh token handler and it`s get panic on the converting of

origIat := int64(token.Claims["orig_iat"].(float64))

It look like the claim is nill.

`
[GIN-debug] [WARNING] Running in "debug" mode. Switch to "release" mode in production.
 - using env:   export GIN_MODE=release
 - using code:  gin.SetMode(gin.ReleaseMode)

[GIN-debug] POST   /login                    --> gopkg.in/appleboy/gin-jwt%2ev1.(*GinJWTMiddleware).LoginHandler-fm (3 handlers)
[GIN-debug] GET    /auth/hello               --> main.HelloHandler (4 handlers)
[GIN-debug] GET    /auth/refresh_token       --> gopkg.in/appleboy/gin-jwt%2ev1.(*GinJWTMiddleware).RefreshHandler-fm (4 handlers)
2947 :8000


�[31m2016/07/04 18:24:56 [Recovery] panic recovered:
GET /auth/refresh_token HTTP/1.1
Host: localhost:8000
Accept: */*
Accept-Encoding: gzip, deflate, sdch
Accept-Language: en-US,en;q=0.8,he;q=0.6
Authorization: Bearer eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJleHAiOjE0Njc2NDg3ODIsImlkIjoiYWRtaW4ifQ.HD_0Lx9UGF3yQMJZCvbPadB7_rKVdtaPD-vIqH4FA-o
Cache-Control: no-cache
Connection: keep-alive
Content-Type: application/json
Dnt: 1
Postman-Token: 27f71581-af40-e08a-30d8-ddd81e89247a
User-Agent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/49.0.2623.87 Safari/537.36


interface conversion: interface is nil, not float64
/usr/local/go/src/runtime/panic.go:423 (0x42a2c9)
    gopanic: reflectcall(nil, unsafe.Pointer(d.fn), deferArgs(d), uint32(d.siz), uint32(d.siz))
/usr/local/go/src/runtime/iface.go:218 (0x40d3f5)
    assertE2T: panic(&TypeAssertionError{"", "", *t._string, ""})
/home/mik/go-programes/src/gopkg.in/appleboy/gin-jwt.v1/auth_jwt.go:199 (0x49a81e)
    (*GinJWTMiddleware).RefreshHandler: origIat := int64(token.Claims["orig_iat"].(float64))

`

[appleboy]

@miko-code I will take it.

[appleboy]

@miko-code Fixed. Please update your package.