fix: remove auto-close GetObjectReader (#12009)

locks can get relinquished when Read() sees io.EOF
leading to prematurely closing of the readers

concurrent writes on the same object can have
undesired consequences here when these locks
are relinquished.

cmd/bucket-lifecycle.go

@@ -530,7 +530,7 @@ type SelectParameters struct {
 
 // IsEmpty returns true if no select parameters set
 func (sp *SelectParameters) IsEmpty() bool {
-	return sp == nil || sp.S3Select == s3select.S3Select{}
+	return sp == nil
 }
 
 var (

cmd/object-api-utils.go

@@ -817,13 +817,7 @@ func (g *GetObjectReader) Close() error {
 
 // Read - to implement Reader interface.
 func (g *GetObjectReader) Read(p []byte) (n int, err error) {
-	n, err = g.pReader.Read(p)
-	if err != nil {
-		// Calling code may not Close() in case of error, so
-		// we ensure it.
-		g.Close()
-	}
-	return
+	return g.pReader.Read(p)
 }
 
 //SealMD5CurrFn seals md5sum with object encryption key and returns sealed