Fix ms function parameter (#2197)

Author: alexandear

.golangci.yaml

@@ -24,6 +24,7 @@ linters:
   enable:
     - copyloopvar
     - dupword
+    - durationcheck
     - ginkgolinter
     - gocritic
     - goimports

pkg/util/wait/backoff_test.go

@@ -42,8 +42,8 @@ func makeSpyTimer() SpyTimer {
 	return SpyTimer{history: ptr.To([]time.Duration{}), Timer: timer}
 }
 
-func ms(m time.Duration) time.Duration {
-	return time.Millisecond * m
+func ms(m int) time.Duration {
+	return time.Duration(m) * time.Millisecond
 }
 
 func TestUntilWithBackoff(t *testing.T) {