Upgrade gotils

Author: Sergio Andres Virviescas Santana

go.mod

@@ -3,7 +3,7 @@ module github.com/fasthttp/router
 go 1.11
 
 require (
-	github.com/savsgio/gotils v0.0.0-20200319105752-a9cc718f6a3f
+	github.com/savsgio/gotils v0.0.0-20200413113635-8c468ce75cca
 	github.com/valyala/bytebufferpool v1.0.0
 	github.com/valyala/fasthttp v1.9.0
 )

go.sum

@@ -2,8 +2,8 @@ github.com/klauspost/compress v1.8.2 h1:Bx0qjetmNjdFXASH02NSAREKpiaDwkO1DRZ3dV2K
 github.com/klauspost/compress v1.8.2/go.mod h1:RyIbtBH6LamlWaDj8nUwkbUhJ87Yi3uG0guNDohfE1A=
 github.com/klauspost/cpuid v1.2.1 h1:vJi+O/nMdFt0vqm8NZBI6wzALWdA2X+egi0ogNyrC/w=
 github.com/klauspost/cpuid v1.2.1/go.mod h1:Pj4uuM528wm8OyEC2QMXAi2YiTZ96dNQPGgoMS4s3ek=
-github.com/savsgio/gotils v0.0.0-20200319105752-a9cc718f6a3f h1:XfUnevLK4O22at3R77FlyQHKwlQs75LELdsH2wRX2KQ=
-github.com/savsgio/gotils v0.0.0-20200319105752-a9cc718f6a3f/go.mod h1:lHhJedqxCoHN+zMtwGNTXWmF0u9Jt363FYRhV6g0CdY=
+github.com/savsgio/gotils v0.0.0-20200413113635-8c468ce75cca h1:Qe7Mtuhjkk38HVpRtvWdziZJcwG3Qup1mfyvyOrcnyM=
+github.com/savsgio/gotils v0.0.0-20200413113635-8c468ce75cca/go.mod h1:TWNAOTaVzGOXq8RbEvHnhzA/A2sLZzgn0m6URjnukY8=
 github.com/valyala/bytebufferpool v1.0.0 h1:GqA5TC/0021Y/b9FG4Oi9Mr3q7XYx6KllzawFIhcdPw=
 github.com/valyala/bytebufferpool v1.0.0/go.mod h1:6bBcMArwyJ5K/AmCkWv1jt77kVWyCJ6HpOuEn7z0Csc=
 github.com/valyala/fasthttp v1.9.0 h1:hNpmUdy/+ZXYpGy0OBfm7K0UQTzb73W0T0U4iJIVrMw=