bitbake: utils: Improve multiple lock handling

We should release locks in the opposite order to the order we locked
them in to avoid potentially problematic behaviour. This hasn't been
observed with our current usage and is just a preventative improvement.

(Bitbake rev: 4fbef87adaca2df8c1e877aec5588c2e5466f252)

Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

bitbake/lib/bb/utils.py

@@ -446,6 +446,7 @@ def fileslocked(files, *args, **kwargs):
     try:
         yield
     finally:
+        locks.reverse()
         for lock in locks:
             bb.utils.unlockfile(lock)