socket: set close on exec

Signed-off-by: Uli Schlachter <psychon@znc.in>
Signed-off-by: Julien Danjou <julien@danjou.info>

common/socket.c

@@ -121,6 +121,8 @@ socket_getclient(void)
     if(csfd < 0)
         warn("error opening UNIX domain socket: %s", strerror(errno));
 
+    fd_set_close_on_exec(csfd);
+
     return csfd;
 }
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