bitbake: runqueue: Fix data corruption problem

This was overwriting data in the parent which caused all kinds of
odd/weird failures.

(Bitbake rev: 4c5aeb424247a9d0c907524ffacd9c61fcdc0852)

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

bitbake/lib/bb/runqueue.py

@@ -1815,6 +1815,9 @@ class RunQueueExecute:
         if not self.rq.depvalidate:
             return False
 
+        # Must not edit parent data
+        taskdeps = set(taskdeps)
+
         taskdata = {}
         taskdeps.add(task)
         for dep in taskdeps: