[PATCH libX11 0/4] various fixes

[walter harms]

hi list,

This fixes a bunch of bugs inside libX11. I did some experiments with smatch
https://blogs.oracle.com/linuxkernel/entry/smatch_static_analysis_tool_overview
It found some more but all of them are fixed easily.
These patches will not change the function of the current code

In case of problems you can find all patched here also: https://github.com/xtforever/libX11/tree/master/src

re,
 wh