SwTxtCursor::GetCharRect: restore comment removed in 1b081132

Change-Id: I2d6cf0afad4d5237b44e21be051f6f593a12830d

sw/source/core/text/itrcrsr.cxx

@@ -1196,6 +1196,8 @@ sal_Bool SwTxtCursor::GetCharRect( SwRect* pOrig, const xub_StrLen nOfst,
 
     _GetCharRect( pOrig, nFindOfst, pCMS );
 
+    // This actually would have to be "-1 LogicToPixel", but that seems too
+    // expensive, so it's a value (-12), that should hopefully be OK.
     const SwTwips nTmpRight = Right() - 12;
 
     pOrig->Pos().X() += aCharPos.X();