mem: Fix use-after-free bug

Running with valgrind I noticed a use after free originating from
simple_mem.cc.  It looks like this is a known issue and this additional call
site was missed in an earlier patch.

1 files changed, 1 insertions, 1 deletions

diff --git a/src/mem/simple_mem.cc b/src/mem/simple_mem.cc
index d3a53a26f..7dd0fd101 100644
--- a/src/mem/simple_mem.cc
+++ b/src/mem/simple_mem.cc
@@ -154,7 +154,7 @@ SimpleMemory::recvTimingReq(PacketPtr pkt)
         assert(pkt->isResponse());
         port.schedTimingResp(pkt, curTick() + latency);
     } else {
-        delete pkt;
+        pendingDelete.push_back(pkt);
     }
 
     return true;