Fix a typo in error reporting when attaching to the tracer (bug 989627). r=vporof

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extra : rebase_source : 59547f9b8f21bc4205b358701d1c9aa900049e81
Bug 991112 - Disable RDP logging for faster tests. r=vporof

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extra : rebase_source : 4a5b5b8001a7a9e1bf0aae3ecd6bb600b6d15154