storage_backend_rbd: rename "stat" variable
storage_backend_rbd: rename "stat" variable

This variable shadows the stat(2) function, which only became visible in
this scope as of commit 9cac8639. Rename the variable so it doesn't
conflict.

Signed-off-by: Michael Chapman <a17fed27eaa842282862ff7c1b9c8395a26ac320@very.puzzling.org>

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