readline: clear the error flag if the error happens to be EAGAIN #22907
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(or the equivalent EWOULDBLOCK) This allows questionable code that tries to combine select and the readline flavour of buffered I/O to limp along. Such code is still risky due to select() checking the underlying OS handle and not the perl handle. Fixes Perl#22883
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(or the equivalent EWOULDBLOCK)
This allows questionable code that tries to combine select and the
readline flavour of buffered I/O to limp along. Such code is still
risky due to select() checking the underlying OS handle and not
the perl handle.
Fixes #22883