codegen: Fix critical with delegate properties
codegen: Fix critical with delegate properties

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