From 2e26c511c4c57306c1ac5ed380c00e0769e24b9d Mon Sep 17 00:00:00 2001
From: Yuxuan Shui <yshuiv7@gmail.com>
Date: Thu, 27 Dec 2018 20:56:05 +0000
Subject: [PATCH] Fix allocation with 0 size

Thanks to the static analyzer

Signed-off-by: Yuxuan Shui <yshuiv7@gmail.com>
---
 src/dbus.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/src/dbus.c b/src/dbus.c
index 96bfefda..8652b497 100644
--- a/src/dbus.c
+++ b/src/dbus.c
@@ -488,6 +488,11 @@ cdbus_apdarg_wids(session_t *ps, DBusMessage *msg, const void *data) {
       ++count;
   }
 
+  if (!count) {
+    // Nothing to append
+    return true;
+  }
+
   // Allocate memory for an array of window IDs
   auto arr = ccalloc(count, cdbus_window_t);