Do not add extra argument to unref functions
Do not add extra argument to unref functions

Fixes bug 615481.

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