ctlv3: close snapshot file before rename (Windows)

[sinsharat]

This issue was occurring since before renaming, the file was still open as defer was used which would have closed it at the end of the method. The same has been corrected now.
#6451

[gyuho]

Does this fix Windows issue in your machine? And commit title? Thanks!

[sinsharat]

@gyuho yes, after testing only i have submitted the fix. Its a windows behaviour, if a file is open, then it cannot be renamed or moved or deleted.
Proof attached.

Thanks!

[sinsharat]

@gyuho what do you want me to change the commit title to?

[gyuho]

@sinsharat Yes please. Thanks!

[sinsharat]

@gyuho actually i wanted your opinion on what to keep the title.

[gyuho]

@sinsharat How about

ctlv3: close snapshot file before rename (Windows)

[sinsharat]

@gyuho changed.
Again the CI failed due to failure of loading packages :(. Any reason for this.
Thanks for suggesting an appropriate title.

[gyuho]

@sinsharat Please also change the commit title in git.

Tests might fail for different reasons, but not from this patch.

Thanks!

[sinsharat]

@gyuho changed the title in git.
Thanks!

[xiang90]

lgtm