Fix initialization of delegate fields
Fix initialization of delegate fields

When initializing the delegate field at creation, its target was
not set. Fixes part of bug 571171.

Jc2k/vala,phako/vala,severinh/vala,jessevdk/vala,frida/vala,flobrosch/vala-fixes,themiwi/vala,Distrotech/vala,Jc2k/vala,jessevdk/vala,frida/vala,spidermonkdust/vala,flobrosch/vala-fixes,jessevdk/vala,lovebug356/vala,playya/vala,spidermonkdust/vala,themiwi/vala,GNOME/vala,lovebug356/vala,GNOME/vala,Distrotech/vala,tjol/vala-tjol,themiwi/vala,severinh/vala,kamanashisroy/aroop,flobrosch/vala-fixes,GNOME/vala,xdave/pvala,tjol/vala-tjol,kamanashisroy/aroop,kamanashisroy/aroop,phako/vala,playya/vala,frida/vala,Distrotech/vala,tjol/vala-tjol,severinh/vala,spidermonkdust/vala,frida/vala,playya/vala,frida/vala,rvu95/vala,rvu95/vala,rvu95/vala,GNOME/vala