Bucket Heal: Do not add empty endpoint entry (#7172)

Currently during a heal of a bucket, if one disk is offline an empty endpoint entry is added.
Then another entry with the missing endpoint is also added.

This results in more entries than disks being added.

Code that adds empty endpoint has been removed.

cmd/xl-v1-healing.go

@@ -133,30 +133,19 @@ func healBucket(ctx context.Context, storageDisks []StorageAPI, bucket string, w
 		DiskCount: len(storageDisks),
 	}
 	for i, before := range beforeState {
-		if storageDisks[i] == nil {
+		if storageDisks[i] != nil {
+			drive := storageDisks[i].String()
 			res.Before.Drives = append(res.Before.Drives, madmin.HealDriveInfo{
 				UUID:     "",
-				Endpoint: "",
+				Endpoint: drive,
 				State:    before,
 			})
 			res.After.Drives = append(res.After.Drives, madmin.HealDriveInfo{
 				UUID:     "",
-				Endpoint: "",
+				Endpoint: drive,
 				State:    afterState[i],
 			})
-			continue
 		}
-		drive := storageDisks[i].String()
-		res.Before.Drives = append(res.Before.Drives, madmin.HealDriveInfo{
-			UUID:     "",
-			Endpoint: drive,
-			State:    before,
-		})
-		res.After.Drives = append(res.After.Drives, madmin.HealDriveInfo{
-			UUID:     "",
-			Endpoint: drive,
-			State:    afterState[i],
-		})
 	}
 
 	reducedErr := reduceWriteQuorumErrs(ctx, dErrs, bucketOpIgnoredErrs, writeQuorum)