avoid a segfault on CD eject in KVM/QEmu

* src/qemu_driver.c: patch from Cole Robinson to avoid a segfault
  on KVM CD eject
Daniel

ChangeLog

+Wed Sep  3 14:51:03 CEST 2008 Daniel Veillard <veillard@redhat.com>
+
+	* src/qemu_driver.c: patch from Cole Robinson to avoid a segfault
+	  on KVM CD eject
+
 Wed Sep  3 14:37:06 CEST 2008 Daniel Veillard <veillard@redhat.com>
 
 	* src/virsh.c: patch from Cole Robinson to add output on attach

src/qemu_driver.c

@@ -2974,7 +2974,10 @@ static int qemudDomainChangeCDROM(virDomainPtr dom,
     }
     VIR_FREE(reply);
     VIR_FREE(cmd);
-    strcpy(olddisk->src, newdisk->src);
+
+    VIR_FREE(olddisk->src);
+    olddisk->src = newdisk->src;
+    newdisk->src = NULL;
     olddisk->type = newdisk->type;
     return 0;
 }