SSH Agent: Helpful error message for adding keys #1677
Merged
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Description
This adds more helpful error messages when adding keys to an agent
fails.
Motivation and context
With the generic error message it is unclear as to where the error is. This would probably happen alot to people using the popular PuTTY agent on Windows.
Closes #1667.
How has this been tested?
I compiled on Windows and Linux, ran the test suites and checked whether the messages where shown as expected.
Types of changes
Checklist:
-DWITH_ASAN=ON
. [REQUIRED]