Linux client fails to start due to invalid cursor size

[Malcolmlowe]

Reported by Chris S.

1. Start synergyc
2. Fails to start.

Expected: Synergy client starts
Actual: Doesn't start.

Solution:

I've tracked the problem back to the libX11 function XQueryBestCursor which
seems to be returning a successful status (True) but also returning values of 0 for 'h' and 'w'.

The call is in your source code
synergy/src/lib/platform/XWindowsScreen.cpp
inside ( method createBlankCursor ).

If the returned valud for h or w is equal to 0, then the subsequent call to XCreatePixmapCursor fails.

The fix I implemented, which seemed to work, was just to add the following lines after the XQueryBestCursor call:

if(w <= 0)
{
w=1;
}

if(h <= 0)
{
h=1;
}