Author :
Ramon Ortega de Voor
Date :
2023-10-23 16:52:19
Hash :ed35b30f Message :Fix two compiler errors for unused variable and undefined function
In buffer.c a variable "flags" and a label "done" are defined but
never used if "EVENT__HAVEMMAP" is not defined.
The code does not work on platforms which do not provide
the function `socketpair()`. Introduce EVENT__HAVE_SOCKETPAIR flag
which determines if `socketpair()` or `evutil_ersatz_socketpair()`
is used.