longparas: make OutputDevice::GetGlyphBoundRects safe

Change-Id: I3dbb42b14a03c5bd98ebc1f67963ffe4c5e4b6b8
Resolves: #i72591# fix from mouse button to mouse pointer...

in documentation of mouseMoved method

Patch By: christianjunker@gmail.com
(cherry picked from commit a66c0e11c326a072f0cb609af35d5e9d77fd3b63)

Change-Id: Ia39fc56d4459f303cd48e5654d8ff35155cceb4a