readerutil, types: gofmt

Change-Id: I16e78c928dca484c0fac35656a2c391a450199ea
diff --git a/readerutil/readerutil_test.go b/readerutil/readerutil_test.go
index c573e6c..991e03c 100644
--- a/readerutil/readerutil_test.go
+++ b/readerutil/readerutil_test.go
@@ -36,4 +36,3 @@
 	fmt.Printf("Read %s bytes\n", v.String())
 	// Output: Read 11 bytes
 }
-
diff --git a/types/types.go b/types/types.go
index 38dfd9e..1b7b9fb 100644
--- a/types/types.go
+++ b/types/types.go
@@ -28,7 +28,7 @@
 	"time"
 )
 
-var null_b     = []byte("null")
+var null_b = []byte("null")
 
 // NopCloser is an io.Closer that does nothing.
 var NopCloser io.Closer = CloseFunc(func() error { return nil })