fix segfault when peer owner attempts to use functional port

--HG--
extra : convert_revision : 3702b4bd038a59bff823c3b428fdfbaabc9715df

src/cpu/o3/thread_context_impl.hh

@@ -103,7 +103,7 @@ void
 O3ThreadContext<Impl>::delVirtPort(VirtualPort *vp)
 {
     if (vp != thread->getVirtPort()) {
-        delete vp->getPeer();
+        vp->removeConn();
         delete vp;
     }
 }

src/cpu/ozone/cpu_impl.hh

@@ -748,7 +748,7 @@ template <class Impl>
 void
 OzoneCPU<Impl>::OzoneTC::delVirtPort(VirtualPort *vp)
 {
-    delete vp->getPeer();
+    vp->removeConn();
     delete vp;
 }
 #endif

src/cpu/simple_thread.cc

@@ -305,7 +305,7 @@ void
 SimpleThread::delVirtPort(VirtualPort *vp)
 {
     if (vp != virtPort) {
-        delete vp->getPeer();
+        vp->removeConn();
         delete vp;
     }
 }