[Scummvm-tracker] [ScummVM :: Bugs] #13542: LSL6 crash when dragging empty text area scrollbar

[ScummVM :: Bugs]

#13542: LSL6 crash when dragging empty text area scrollbar
---------------------------------+--------------------------
Reporter:  RayKoopa              |      Owner:  (none)
    Type:  defect                |     Status:  new
Priority:  normal                |  Component:  Engine: SCI
 Version:                        |   Keywords:  crash, array
    Game:  Leisure Suit Larry 6  |
---------------------------------+--------------------------
 - ScummVM 2.6.0git6340-g974c51b4cd1 (Jun  5 2022 09:42:22)
 - Game language: English
 - Game version: Hi-Res 1.000.000
 - Windows 11 21H2 10.0.22000.675

 Steps to reproduce:
 - Start a new game or restore a previously saved game. This empties /
 clears the text area.
 - Make sure the text area is visible (Game > Text On / Off)
 - Attempt to drag the scrollbar thumb downwards.
 - The emulator will crash with the following log:
   {{{
   Assertion failed: idx < _size, file ./common/array.h, line 232

   [process exited with code 3 (0x00000003)]
   }}}

 In DOSBox, the thumb can be dragged smoothly, despite nothing being
 scrolled.
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Ticket URL: <https://bugs.scummvm.org/ticket/13542>
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