qemu: Use the proper string in qemuBlock...JSONSocketAddress()
qemu: Use the proper string in qemuBlock...JSONSocketAddress()

Recent refactors made it so that the function may use uninitialized
pointer, but it actually wanted to use a different variable and value
at all.

Signed-off-by: Martin Kletzander <e82f23e74d43760279ebcc505dac4ae70d5627d0@redhat.com>

datto/libvirt,crobinso/libvirt,andreabolognani/libvirt,olafhering/libvirt,andreabolognani/libvirt,jfehlig/libvirt,fabianfreyer/libvirt,jardasgit/libvirt,datto/libvirt,libvirt/libvirt,zippy2/libvirt,olafhering/libvirt,zippy2/libvirt,eskultety/libvirt,zippy2/libvirt,datto/libvirt,jfehlig/libvirt,nertpinx/libvirt,fabianfreyer/libvirt,fabianfreyer/libvirt,datto/libvirt,eskultety/libvirt,eskultety/libvirt,olafhering/libvirt,zippy2/libvirt,nertpinx/libvirt,fabianfreyer/libvirt,crobinso/libvirt,jardasgit/libvirt,eskultety/libvirt,jfehlig/libvirt,libvirt/libvirt,andreabolognani/libvirt,jardasgit/libvirt,crobinso/libvirt,nertpinx/libvirt,nertpinx/libvirt,jardasgit/libvirt,jardasgit/libvirt,nertpinx/libvirt,andreabolognani/libvirt,fabianfreyer/libvirt,datto/libvirt,andreabolognani/libvirt,libvirt/libvirt,libvirt/libvirt,crobinso/libvirt,olafhering/libvirt,eskultety/libvirt,jfehlig/libvirt