D-Bus: Fix memory leaks when handling signals in static clients
D-Bus: Fix memory leaks when handling signals in static clients

Distrotech/vala,frida/vala,kamanashisroy/aroop,Distrotech/vala,severinh/vala,spidermonkdust/vala,themiwi/vala,tjol/vala-tjol,spidermonkdust/vala,frida/vala,jessevdk/vala,themiwi/vala,GNOME/vala,jessevdk/vala,frida/vala,tjol/vala-tjol,flobrosch/vala-fixes,playya/vala,rvu95/vala,xdave/pvala,severinh/vala,rvu95/vala,spidermonkdust/vala,kamanashisroy/aroop,Distrotech/vala,tjol/vala-tjol,severinh/vala,jessevdk/vala,flobrosch/vala-fixes,themiwi/vala,playya/vala,GNOME/vala,frida/vala,kamanashisroy/aroop,rvu95/vala,GNOME/vala,frida/vala,playya/vala,GNOME/vala,flobrosch/vala-fixes