message: Disable change events of mipLevel and sliceFace when switching textures
  Otherwise, bad texture queries may occur, which refer to mip and slice
  values of the previous texture.
diff: @@ -1127,6 +1127,10 @@ void TextureViewer::UI_OnTextureSelectionChanged(bool newdraw)
  UI_UpdateStatusText();
  + // block signals for mipLevel and sliceFace comboboxes while editing them
  + ui->mipLevel->blockSignals(true);
  + ui->sliceFace->blockSignals(true);
  +
  ui->mipLevel->clear();
  m_TexDisplay.mip = 0;
  @@ -1239,6 +1243,10 @@ void TextureViewer::UI_OnTextureSelectionChanged(bool newdraw)
  m_PrevFirstArraySlice = firstArraySlice;
  }
  + // enable signals for mipLevel and sliceFace
  + ui->mipLevel->blockSignals(false);
  + ui->sliceFace->blockSignals(false);
  +
  // because slice and mip are specially set above, we restore any per-tex settings to apply
  // even if we don't switch to a new texture.
  // Note that if the slice or mip was changed because that slice or mip is the selected one
  