cid#1500380: silence Resource leak

Change-Id: Ib938b921343359b91f42fc68d89bf9eda32132d8
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/130626
Tested-by: Julien Nabet <serval2412@yahoo.fr>
Reviewed-by: Julien Nabet <serval2412@yahoo.fr>

sot/source/sdstor/stg.cxx

@@ -625,6 +625,8 @@ BaseStorageStream* Storage::OpenStream( const OUString& rName, StreamMode m, boo
     }
     else if( !ValidateMode( m, p ) )
         p = nullptr;
+    // coverity[Resource leak : FALSE] - "Create" method is called with STG_STREAM line 620,
+    // so we won't enter into this "if" block here.
     if( p && p->m_aEntry.GetType() != STG_STREAM )
     {
         pIo->SetError( SVSTREAM_FILE_NOT_FOUND );