
EWOULDBLOCK to be returned rather than looping again to see if any characters are pending. Also, fix another bug in the original code; if someone changed VMIN behind our back, last_cc might be uninitialized when we reference it.
EWOULDBLOCK to be returned rather than looping again to see if any characters are pending. Also, fix another bug in the original code; if someone changed VMIN behind our back, last_cc might be uninitialized when we reference it.