Close gzipOutputStream after the usage

[munendrasn]

Fixes #541

[coveralls]

Pull Request Test Coverage Report for Build 1107

• 0 of 11 (0.0%) changed or added relevant lines in 1 file are covered.
• 1 unchanged line in 1 file lost coverage.
• Overall coverage decreased (-0.007%) to 21.901%

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Changes Missing Coverage	Covered Lines	Changed/Added Lines	%
pippo-core/src/main/java/ro/pippo/core/gzip/GZipResponseStream.java	0	11	0.0%

Files with Coverage Reduction	New Missed Lines	%
pippo-core/src/main/java/ro/pippo/core/gzip/GZipResponseStream.java	1	0%

Totals
Change from base Build 1106:	-0.007%
Covered Lines:	1408
Relevant Lines:	6429

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💛 - Coveralls

[munendrasn]

Created PR #543 for failing test in master for java11

[decebals]

@munendrasn Please test it with your application(s) and if you don't see a downside I am ready to merge it.

[munendrasn]

I did some minor testing, things look good. I haven't done good perf tests were memory could build-up

[decebals]

@munendrasn Again, if you think that this PR is ready for merge please merge it. I don't know if we can add a unit test for it. Try it in your application(s) and if the result is OK please merge it.
@mhagnumdw Do you see any problem with the modifications from this PR?

[mhagnumdw]

@decebals , looks good to me! I ratify what you said.

💭 ps: I was thinking (just thinking) what a unit test would be like to detect memory leak. From what I understand and to be more precise, I would have to start a new jvm just with this test. 💭

[decebals]

@mhagnumdw Thanks for feedback!

looks good to me! I ratify what you said.

In this case, @munendrasn please press the "Squash and merge" button. It's time for your first PR merge in Pippo 😄.

ps: I was thinking (just thinking) what a unit test would be like to detect memory leak. From what I understand and to be more precise, I would have to start a new jvm just with this test.

I think that it's too complicated so let's do it without a test.

[munendrasn]

@decebals Thanks for the merge access

In this case, @munendrasn please press the "Squash and merge" button

Regarding this, Github allows Repo admin(in this case you) to set branch rules from Settings, through which only squash-merge can be allowed, all other options remain disabled