libeventd-plugin: Remove leftover return

Signed-off-by: Quentin Glidic <sardemff7+git@sardemff7.net>
autotools: Remove -Wl,--no-undefined from AM_LDFLAGS

This fixes compilation on OpenBSD and should be a developper flag anyway

Signed-off-by: Quentin Glidic <sardemff7+git@sardemff7.net>
im: Fix typo

Signed-off-by: Quentin Glidic <sardemff7+git@sardemff7.net>
im: Fix g_free calls on non-existing variables

Signed-off-by: Quentin Glidic <sardemff7+git@sardemff7.net>