Fix connected UDPSocket filtering

[SeppoTakalo]

Description

Fix connected UDPSocket filtering
Was dropping all packets from connected peer

Pull request type

[x] Fix
[ ] Refactor
[ ] New target
[ ] Feature
[ ] Breaking change

[SeppoTakalo]

@kjbracey-arm or @mikaleppanen please review.

[SeppoTakalo]

Connecting to downloads.sourceforge.net (downloads.sourceforge.net)|216.105.38.13|:443... connected.
Unable to establish SSL connection.
tar: astyle_3.1_linux.tar.gz: Cannot open: No such file or directory
tar: Error is not recoverable: exiting now

Can somebody fix the Travis astyle script?

[cmonr]

@SeppoTakalo A fix is in and has been merged with master.

If the problem persists, a rebase of this PR will fix the problem. However, it looks like SourceForce decided to start working again.

[kjbracey]

/morph build

[mbed-ci]

Build : SUCCESS

Build number : 2458
Build artifacts/logs : http://mbed-os.s3-website-eu-west-1.amazonaws.com/?prefix=builds/7336/

Triggering tests

/morph test
/morph uvisor-test
/morph export-build
/morph mbed2-build

[mbed-ci]

Exporter Build : SUCCESS

Build number : 2088
Build artifacts/logs : http://mbed-os.s3-website-eu-west-1.amazonaws.com/?prefix=builds/exporter/7336/

[mbed-ci]

Test : FAILURE

Build number : 2235
Test logs :http://mbed-os-logs.s3-website-us-west-1.amazonaws.com/?prefix=logs/7336/2235

[0xc0170]

/morph test

[mbed-ci]

Test : SUCCESS

Build number : 2243
Test logs :http://mbed-os-logs.s3-website-us-west-1.amazonaws.com/?prefix=logs/7336/2243

[adbridge]

This is based on top of #7192 which is marked for 5.10