module: Fix crash in pa_module_unload_all()

Previously, if there were no modules loaded when the daemon exited,
pa_module_unload_all() would crash due to giving zero count to
pa_xnew().

Thanks to Pierre Ossman for the patch.

1 files changed, 3 insertions, 0 deletions

diff --git a/src/pulsecore/module.c b/src/pulsecore/module.c
index 396096942..16582b329 100644
--- a/src/pulsecore/module.c
+++ b/src/pulsecore/module.c
@@ -221,6 +221,9 @@ void pa_module_unload_all(pa_core *c) {
     pa_assert(c);
     pa_assert(c->modules);
 
+    if (pa_idxset_isempty(c->modules))
+        return;
+
     /* Unload modules in reverse order by default */
     indices = pa_xnew(uint32_t, pa_idxset_size(c->modules));
     i = 0;