use unique_ptr in BenOpenContainer

Change-Id: Idc9d728e711f70cc11974020aa507552f31d4c9c
Reviewed-on: https://gerrit.libreoffice.org/65919
Tested-by: Jenkins
Reviewed-by: Noel Grandin <noel.grandin@collabora.co.uk>

lotuswordpro/source/filter/bencont.cxx

@@ -70,7 +70,7 @@ const char gsBenMagicBytes[] = BEN_MAGIC_BYTES;
 *   @param  pointer to pointer of Bento Container object
 *   @return error code
 */
-sal_uLong BenOpenContainer(LwpSvStream * pStream, LtcBenContainer ** ppContainer)
+sal_uLong BenOpenContainer(LwpSvStream * pStream, std::unique_ptr<LtcBenContainer>* ppContainer)
 {
     *ppContainer = nullptr;
 
@@ -79,14 +79,13 @@ sal_uLong BenOpenContainer(LwpSvStream * pStream, LtcBenContainer ** ppContainer
         return BenErr_ContainerWithNoObjects;
     }
 
-    LtcBenContainer * pContainer = new LtcBenContainer(pStream);
+    std::unique_ptr<LtcBenContainer> pContainer(new LtcBenContainer(pStream));
     if (pContainer->Open() != BenErr_OK) // delete two inputs
     {
-        delete pContainer;
         return BenErr_InvalidTOC;
     }
 
-    *ppContainer = pContainer;
+    *ppContainer = std::move(pContainer);
     return BenErr_OK;
 }
 

lotuswordpro/source/filter/bento.hxx

@@ -59,6 +59,7 @@
 #include <sal/config.h>
 
 #include <cstring>
+#include <memory>
 #include <string>
 #include <vector>
 #include <lwpsvstream.hxx>
@@ -136,7 +137,7 @@ typedef sal_uInt32 BenContainerPos;
 typedef sal_uInt32 BenObjectID;
 typedef sal_uInt32 BenGeneration;
 
-sal_uLong BenOpenContainer(LwpSvStream * pStream, LtcBenContainer ** ppContainer);
+sal_uLong BenOpenContainer(LwpSvStream * pStream, std::unique_ptr<LtcBenContainer>* ppContainer);
 
 class CBenIDListElmt : public CUtListElmt
 {

lotuswordpro/source/filter/lwpfilter.cxx

@@ -109,9 +109,7 @@ static bool Decompress(SvStream *pCompressed, SvStream * & pOutDecompressed)
     std::unique_ptr<LwpSvStream> aLwpStream(new LwpSvStream(pCompressed));
     std::unique_ptr<OpenStormBento::LtcBenContainer> pBentoContainer;
     {
-        OpenStormBento::LtcBenContainer* pTmp(nullptr);
-        sal_uLong ulRet = BenOpenContainer(aLwpStream.get(), &pTmp);
-        pBentoContainer.reset(pTmp);
+        sal_uLong ulRet = BenOpenContainer(aLwpStream.get(), &pBentoContainer);
         if (ulRet != BenErr_OK)
             return false;
     }

lotuswordpro/source/filter/lwpgrfobj.cxx

@@ -286,7 +286,7 @@ void LwpGraphicObject::CreateDrawObjects()
     // if small file, use the compressed stream for BENTO
     LwpSvStream* pStream = m_pStrm->GetCompressedStream() ?  m_pStrm->GetCompressedStream(): m_pStrm;
 
-    OpenStormBento::LtcBenContainer* pBentoContainer;
+    std::unique_ptr<OpenStormBento::LtcBenContainer> pBentoContainer;
     sal_uLong ulRet = OpenStormBento::BenOpenContainer(pStream, &pBentoContainer);
     if (ulRet != OpenStormBento::BenErr_OK)
         return;
@@ -334,9 +334,7 @@ std::vector<sal_uInt8> LwpGraphicObject::GetRawGrafData()
 
     std::unique_ptr<OpenStormBento::LtcBenContainer> pBentoContainer;
     {
-        OpenStormBento::LtcBenContainer* pTmp(nullptr);
-        sal_uLong ulRet = OpenStormBento::BenOpenContainer(pStream, &pTmp);
-        pBentoContainer.reset(pTmp);
+        sal_uLong ulRet = OpenStormBento::BenOpenContainer(pStream, &pBentoContainer);
         if (ulRet != OpenStormBento::BenErr_OK)
             return aGrafData;
     }
@@ -361,7 +359,7 @@ sal_uInt32 LwpGraphicObject::GetGrafData(std::unique_ptr<sal_uInt8[]>& pGrafData
     // if small file, use the compressed stream for BENTO
     LwpSvStream* pStream = m_pStrm->GetCompressedStream() ?  m_pStrm->GetCompressedStream(): m_pStrm;
 
-    OpenStormBento::LtcBenContainer* pBentoContainer;
+    std::unique_ptr<OpenStormBento::LtcBenContainer> pBentoContainer;
     sal_uLong ulRet = OpenStormBento::BenOpenContainer(pStream, &pBentoContainer);
     if (ulRet != OpenStormBento::BenErr_OK)
         return 0;
@@ -379,7 +377,7 @@ sal_uInt32 LwpGraphicObject::GetGrafData(std::unique_ptr<sal_uInt8[]>& pGrafData
     // get bento stream by the name
     pGrafStream = pBentoContainer->FindValueStreamWithPropertyName(sDName);
 
-    SvMemoryStream* pMemGrafStream = static_cast<SvMemoryStream*>(pGrafStream);
+    std::unique_ptr<SvMemoryStream> pMemGrafStream(static_cast<SvMemoryStream*>(pGrafStream));
 
     if (pMemGrafStream)
     {
@@ -389,9 +387,6 @@ sal_uInt32 LwpGraphicObject::GetGrafData(std::unique_ptr<sal_uInt8[]>& pGrafData
         pGrafData.reset(new sal_uInt8 [nDataLen]);
         pMemGrafStream->ReadBytes(pGrafData.get(), nDataLen);
 
-        delete pMemGrafStream;
-        pMemGrafStream = nullptr;
-
         return nDataLen;
     }