Use emptiness check rather than size check for efficiency

dtrans/source/win32/dtobj/FetcList.cxx

@@ -120,7 +120,7 @@ sal_Bool CFormatEtcContainer::hasFormatEtc( const CFormatEtc& fetc ) const
 
 sal_Bool CFormatEtcContainer::hasElements( ) const
 {
-    return ( m_FormatMap.size( ) > 0 );
+    return !m_FormatMap.empty();
 }
 
 //------------------------------------------------------------------------

dtrans/source/win32/dtobj/FmtFilter.cxx

@@ -482,7 +482,7 @@ typedef Sequence<sal_Int8> ByteSequence_t;
    a double '\0' terminated string buffer */
 size_t CalcSizeForStringListBuffer(const FileList_t& fileList)
 {
-    if (fileList.size() == 0)
+    if ( fileList.empty() )
         return 0;
 
     size_t size = 1; // one for the very final '\0'