bitbake: runqueue: Ensure we clear the stamp cache

When the task hashes change we need to ensure the stampcache is cleared out
else tasks don't rerun when they should as we're basing decisions on stale
cache data.

(Bitbake rev: 08962092d3bb7887d82f97d442a6103c0677eae7)

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

bitbake/lib/bb/runqueue.py

@@ -2307,6 +2307,9 @@ class RunQueueExecute:
             (mc, fn, taskname, taskfn) = split_tid_mcfn(tid)
             self.sqdata.stamps[tid] = bb.build.stampfile(taskname + "_setscene", self.rqdata.dataCaches[mc], taskfn, noextra=True)
 
+            if tid in self.stampcache:
+                del self.stampcache[tid]
+
             if tid in self.build_stamps:
                 del self.build_stamps[tid]