codegen: Drop useless comma expression in method call
codegen: Drop useless comma expression in method call

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