Hi,

This is not a real problem with gdbserver, but other types of remote 
targets (other stubs, QEMU etc) may cut the connection abruptly since 
they are not required to reply to a 'k' (Kill) packet sent from GDB.

The following patch addresses any issues arising from such scenario, 
which leads to a GDB internal error due to an attempt to pop the target 
more than once. With the patch, this failure is handled gracefully.

As the ChangeLog suggests, i'm sending this on behalf of its original 
authors.

Luis