golint: fix redundant code logic (#7842)

Signed-off-by: Lei Liu <liul.stone@gmail.com>

cmd/erasure.go

@@ -77,10 +77,7 @@ func (e *Erasure) DecodeDataBlocks(data [][]byte) error {
 	if !needsReconstruction {
 		return nil
 	}
-	if err := e.encoder.ReconstructData(data); err != nil {
-		return err
-	}
-	return nil
+	return e.encoder.ReconstructData(data)
 }
 
 // DecodeDataAndParityBlocks decodes the given erasure-coded data and verifies it.

pkg/event/target/queuestore_test.go

@@ -43,10 +43,7 @@ func setUpStore(directory string, limit uint16) (Store, error) {
 
 // Tear down store
 func tearDownStore() error {
-	if err := os.RemoveAll(queueDir); err != nil {
-		return err
-	}
-	return nil
+	return os.RemoveAll(queueDir)
 }
 
 // TestQueueStorePut - tests for store.Put