app_server crash: deleting referenceable object 0x11e6beb55590 with reference count (-1)

[humdinger]

I was playing with ArtPaint when app_server crashed. ArtPaint uses different mouse pointers for its tools, so that might've been the trigger.

This I found in the syslog:

1493: DEBUGGER: deleting referenceable object 0x11e6beb55590 with reference count (-1)
debug_server: Thread 1493 entered the debugger: Debugger call: `deleting referenceable object 0x11e6beb55590 with reference count (-1)'
stack trace, current PC 0x8fa9c050a9  </boot/system/lib/libroot.so> _kern_debugger + 0x9:
  (0x7f23c24ce190)  0xd27ed8c843  </boot/system/servers/app_server> _ZN12ServerCursor21LastReferenceReleasedEv + 0x43
  (0x7f23c24ce1b0)  0x19534963ce2  </boot/system/lib/libbe.so> _ZN14BReferenceable16ReleaseReferenceEv + 0x72
  (0x7f23c24ce1e0)  0xd27ed6db01  </boot/system/servers/app_server> _ZN7Desktop9SetCursorEP12ServerCursor + 0x61
  (0x7f23c24ce200)  0xd27ed8b342  </boot/system/servers/app_server> _ZN9ServerApp16_DispatchMessageEiRN8BPrivate12LinkReceiverE + 0x5c92
  (0x7f23c24ced10)  0xd27ed8ba15  </boot/system/servers/app_server> _ZN9ServerApp14_MessageLooperEv + 0x115
  (0x7f23c24cede0)  0xd27ed7ec2a  </boot/system/servers/app_server> _ZN13MessageLooper15_message_threadEPv + 0xa
  (0x7f23c24cedf0)  0x8fa9c03e19  </boot/system/lib/libroot.so> thread_entry + 0x19