move the error checks from sslclient.cpp to wsclient.cpp where they belong, so they dont cause excessive data copies or false alarms

[braindigitalis]

The code added in a previous PR would cause unceccessary checks of the data every time we did SSL_read, this really belongs in wsclient when looking for the 101 reply, so i moved it.

Code change checklist

• I have ensured that all methods and functions are fully documented using doxygen style comments.
• My code follows the coding style guide.
• I tested that my change works before raising the PR.
• I have ensured that I did not break any existing API calls.
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