Comment 2 for bug 1672003

StacktraceTop:
 XQueryPointer (dpy=0x560e13ea0fc0, w=1276, root=root@entry=0x7ffd9688a0b0, child=child@entry=0x7ffd9688a0b8, root_x=root_x@entry=0x7ffd9688a094, root_y=root_y@entry=0x7ffd9688a098, win_x=0x7ffd9688a09c, win_y=0x7ffd9688a0a0, mask=0x7ffd9688a0a4) at ../../src/QuPntr.c:42
 X11SalFrame::Init (this=this@entry=0x560e1b242f50, nSalFrameStyle=nSalFrameStyle@entry=NONE, nXScreen=..., pParentData=pParentData@entry=0x0, bUseGeometry=bUseGeometry@entry=false) at ./vcl/unx/generic/window/salframe.cxx:513
 X11SalFrame::X11SalFrame (this=0x560e1b242f50, pParent=<optimized out>, nSalFrameStyle=NONE, pSystemParent=0x0) at ./vcl/unx/generic/window/salframe.cxx:829
 KDESalFrame::KDESalFrame (this=0x560e1b242f50, pParent=<optimized out>, nState=<optimized out>) at ./vcl/unx/kde4/KDESalFrame.cxx:52
 KDESalInstance::CreateFrame (this=<optimized out>, pParent=0x0, nState=NONE) at ./vcl/unx/kde4/KDESalInstance.cxx:42