Fix golint failures of util/bandwith/*.go

pkg/util/bandwidth/linux.go

@@ -44,6 +44,7 @@ type tcShaper struct {
 	iface string
 }
 
+// NewTCShaper makes a new tcShaper for the given interface
 func NewTCShaper(iface string) BandwidthShaper {
 	shaper := &tcShaper{
 		e:     exec.New(),
@@ -157,10 +158,9 @@ func (t *tcShaper) findCIDRClass(cidr string) (classAndHandleList [][]string, fo
 			// filter parent 1: protocol ip pref 1 u32 fh 800::800 order 2048 key ht 800 bkt 0 flowid 1:1
 			if len(parts) != 19 {
 				return classAndHandleList, false, fmt.Errorf("unexpected output from tc: %s %d (%v)", filter, len(parts), parts)
-			} else {
-				resultTmp := []string{parts[18], parts[9]}
-				classAndHandleList = append(classAndHandleList, resultTmp)
 			}
+			resultTmp := []string{parts[18], parts[9]}
+			classAndHandleList = append(classAndHandleList, resultTmp)
 		}
 	}
 	if len(classAndHandleList) > 0 {