sw: Turn SwScriptInfo's m_HiddenChg into a std::vector

as it is added only at its end.

Change-Id: I46731565ddf833b055ddd5dc9175638daef1e298
Reviewed-on: https://gerrit.libreoffice.org/57837
Tested-by: Jenkins
Reviewed-by: Noel Grandin <noel.grandin@collabora.co.uk>

sw/source/core/inc/scriptinfo.hxx

@@ -67,7 +67,7 @@ private:
     std::unordered_set<size_t> m_KashidaInvalid;
     std::deque<TextFrameIndex> m_NoKashidaLine;
     std::deque<TextFrameIndex> m_NoKashidaLineEnd;
-    std::deque<TextFrameIndex> m_HiddenChg;
+    std::vector<TextFrameIndex> m_HiddenChg;
     //! Records a single change in compression.
     struct CompressionChangeInfo
     {