dova: Fix access to string.data from outside dova-core
dova: Fix access to string.data from outside dova-core

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