Let's return std::unique_ptr<...> directly.

It's only used at one call site, which already uses
std::unique_ptr.

Change-Id: I5ff528ebc560bb6eb8783d20002cea40a451761e
Reviewed-on: https://gerrit.libreoffice.org/32946Reviewed-by: Kohei Yoshida <libreoffice@kohei.us>
Tested-by: Kohei Yoshida <libreoffice@kohei.us>

package/inc/ZipFile.hxx

@@ -33,6 +33,8 @@
 
 #include <mutexholder.hxx>
 
+#include <memory>
+
 namespace com { namespace sun { namespace star {
     namespace uno { class XComponentContext; }
     namespace ucb  { class XProgressHandler; }
@@ -159,7 +161,7 @@ public:
             const OUString& aMediaType,
             const rtl::Reference<SotMutexHolder>& aMutexHolder );
 
-    ZipEnumeration* entries();
+    std::unique_ptr<ZipEnumeration> entries();
 };
 
 #endif

package/source/zipapi/ZipFile.cxx

@@ -32,6 +32,7 @@
 #include <comphelper/processfactory.hxx>
 #include <rtl/digest.h>
 #include <osl/diagnose.h>
+#include <o3tl/make_unique.hxx>
 
 #include <algorithm>
 #include <vector>
@@ -518,9 +519,9 @@ uno::Reference< XInputStream > ZipFile::createUnbufferedStream(
     return new XUnbufferedStream ( m_xContext, aMutexHolder, rEntry, xStream, rData, nStreamMode, bIsEncrypted, aMediaType, bRecoveryMode );
 }
 
-ZipEnumeration* ZipFile::entries()
+std::unique_ptr<ZipEnumeration> ZipFile::entries()
 {
-    return new ZipEnumeration ( aEntries );
+    return o3tl::make_unique<ZipEnumeration>(aEntries);
 }
 
 uno::Reference< XInputStream > SAL_CALL ZipFile::getInputStream( ZipEntry& rEntry,

package/source/zippackage/ZipPackage.cxx

@@ -486,7 +486,7 @@ void ZipPackage::parseContentType()
 
 void ZipPackage::getZipFileContents()
 {
-    std::unique_ptr < ZipEnumeration > xEnum(m_pZipFile->entries());
+    std::unique_ptr<ZipEnumeration> xEnum = m_pZipFile->entries();
     ZipPackageStream *pPkgStream;
     ZipPackageFolder *pPkgFolder, *pCurrent;
     OUString sTemp, sDirName;