<para>On failure, this call returns a negative
errno-style error code. If
<varname>$LISTEN_FDS</varname>/<varname>$LISTEN_PID</varname>
- was not set or not correctly set for this daemon and
- hence no file descriptors received, 0 is
+ was not set or was not correctly set for this daemon and
+ hence no file descriptors were received, 0 is
returned. Otherwise the number of file descriptors
passed is returned. The application may find them
starting with file descriptor SD_LISTEN_FDS_START,