ofz#5810 the vector has an entry for each char

but most of it is empty, so use a map instead

Change-Id: I92fe46939e5107926fd4b92167bbace63f0376d5
Reviewed-on: https://gerrit.libreoffice.org/48830Reviewed-by: Caolán McNamara <caolanm@redhat.com>
Tested-by: Caolán McNamara <caolanm@redhat.com>

hwpfilter/source/hpara.cxx

@@ -162,7 +162,6 @@ bool HWPPara::Read(HWPFile & hwpf, unsigned char flag)
         }
     }
 // read string
-    hhstr.resize(nch);
     ii = 0;
     while (ii < nch)
     {

hwpfilter/source/hpara.h

@@ -23,7 +23,9 @@
 #include "hwplib.h"
 #include "hwpfile.h"
 #include "hinfo.h"
+#include <map>
 #include <memory>
+#include <vector>
 
 struct HBox;
 
@@ -111,7 +113,7 @@ class DLLEXPORT HWPPara
 /**
  * Box object list
  */
-        std::vector<std::unique_ptr<HBox>> hhstr;
+        std::map<unsigned short, std::unique_ptr<HBox>> hhstr;
 
         HWPPara(void);
         ~HWPPara(void);