Resolves: tdf#121936 uninitialized value used

since...

commit e194f597ae5882e1cda2cac2925577fff609f101
Date:   Sun Sep 30 16:07:16 2018 +0200

    Change GlyphItem::nFallbackLevel to font instance

Change-Id: I14b40a63cd48ef527e76e15af8f421ce48cce769
Reviewed-on: https://gerrit.libreoffice.org/64698
Reviewed-by: Caolán McNamara <caolanm@redhat.com>
Tested-by: Caolán McNamara <caolanm@redhat.com>
diff --git a/vcl/source/gdi/sallayout.cxx b/vcl/source/gdi/sallayout.cxx
index 0fea93f..aad45b3 100644
--- a/vcl/source/gdi/sallayout.cxx
+++ b/vcl/source/gdi/sallayout.cxx
@@ -892,7 +892,7 @@ sal_Int32 GenericSalLayout::GetTextBreak( DeviceCoordinate nMaxWidth, DeviceCoor

bool GenericSalLayout::GetNextGlyph(const GlyphItem** pGlyph,
                                    Point& rPos, int& nStart,
                                    const PhysicalFontFace**, int* const) const
                                    const PhysicalFontFace**, int* const pFallbackLevel) const
{
    std::vector<GlyphItem>::const_iterator pGlyphIter = m_GlyphItems.Impl()->begin();
    std::vector<GlyphItem>::const_iterator pGlyphIterEnd = m_GlyphItems.Impl()->end();
@@ -915,6 +915,8 @@ bool GenericSalLayout::GetNextGlyph(const GlyphItem** pGlyph,

    // update return data with glyph info
    *pGlyph = &(*pGlyphIter);
    if (pFallbackLevel)
        *pFallbackLevel = 0;
    ++nStart;

    // calculate absolute position in pixel units