xl: Fix typo in PutObject when uploading a 10Mb file (#6567)
xl: Fix typo in PutObject when uploading a 10Mb file (#6567)

PutObject forgot to allocate memory when the size of the uploaded
file is exactly equal to blockSizeV1 = 10 Mb.
harshavardhana/minio,vadmeste/minio,fwessels/minio,aead/minio,balamurugana/minio,NitishT/minio,aead/minio,aead/minio,krishnasrinivas/minio,krishnasrinivas/minio,donatello/minio,aead/minio,jimjag/minio,fwessels/minio,jimjag/minio,aead/minio,krisis/minio,harshavardhana/minio,harshavardhana/minio,fwessels/minio,harshavardhana/minio,NitishT/minio,aead/minio,NitishT/minio,donatello/minio,NitishT/minio,harshavardhana/minio,harshavardhana/minio,minio/minio,jimjag/minio,krishnasrinivas/minio,minio/minio,jimjag/minio,fwessels/minio,krishnasrinivas/minio,harshavardhana/minio,harshavardhana/minio,aead/minio,krisis/minio,aead/minio,vadmeste/minio,balamurugana/minio