qemu: Fix build error introduced in 653137eb957a278b556c6226424aad5395a
qemu: Fix build error introduced in 653137eb957a278b556c6226424aad5395a

The build failure is caused by a false positive of some static analysys
steps done by gcc (that don't happen on -O0).

agx/libvirt,fabianfreyer/libvirt,eskultety/libvirt,andreabolognani/libvirt,fabianfreyer/libvirt,agx/libvirt,datto/libvirt,agx/libvirt,shugaoye/libvirt,jfehlig/libvirt,jfehlig/libvirt,elmarco/libvirt,nertpinx/libvirt,nertpinx/libvirt,jardasgit/libvirt,shugaoye/libvirt,datto/libvirt,andreabolognani/libvirt,nertpinx/libvirt,eskultety/libvirt,datto/libvirt,VenkatDatta/libvirt,libvirt/libvirt,fabianfreyer/libvirt,libvirt/libvirt,agx/libvirt,crobinso/libvirt,libvirt/libvirt,olafhering/libvirt,eskultety/libvirt,andreabolognani/libvirt,elmarco/libvirt,rlaager/libvirt,crobinso/libvirt,andreabolognani/libvirt,jfehlig/libvirt,jardasgit/libvirt,VenkatDatta/libvirt,fabianfreyer/libvirt,datto/libvirt,jardasgit/libvirt,rlaager/libvirt,agx/libvirt,VenkatDatta/libvirt,eskultety/libvirt,eskultety/libvirt,nertpinx/libvirt,VenkatDatta/libvirt,zippy2/libvirt,shugaoye/libvirt,rlaager/libvirt,elmarco/libvirt,olafhering/libvirt,taget/libvirt,taget/libvirt,taget/libvirt,shugaoye/libvirt,crobinso/libvirt,olafhering/libvirt,jardasgit/libvirt,taget/libvirt,libvirt/libvirt,zippy2/libvirt,olafhering/libvirt,taget/libvirt,fabianfreyer/libvirt,VenkatDatta/libvirt,shugaoye/libvirt,jfehlig/libvirt,andreabolognani/libvirt,elmarco/libvirt,rlaager/libvirt,nertpinx/libvirt,elmarco/libvirt,datto/libvirt,zippy2/libvirt,crobinso/libvirt,jardasgit/libvirt,rlaager/libvirt,zippy2/libvirt