Fix crash on valid recursive struct usage
Fix crash on valid recursive struct usage

Fixes bug 614417.

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