Constify.

svn path=/trunk/KDE/kdeutils/ark/; revision=979512

plugins/libarchive/libarchivehandler.cpp

@@ -606,7 +606,7 @@ int LibArchiveInterface::extractionFlags() const
 	return result;
 }
 
-void LibArchiveInterface::copyData( QString filename, struct archive *dest, bool partialprogress )
+void LibArchiveInterface::copyData( const QString& filename, struct archive *dest, bool partialprogress )
 {
 	char buff[ARCHIVE_DEFAULT_BYTES_PER_BLOCK];
 	ssize_t readBytes;

plugins/libarchive/libarchivehandler.h

@@ -49,8 +49,8 @@ class LibArchiveInterface: public ReadWriteArchiveInterface
 	private:
 		void emitEntryFromArchiveEntry( struct archive_entry *entry );
 		int extractionFlags() const;
+		void copyData( const QString& filename, struct archive *dest, bool partialprogress = true );
 		void copyData( struct archive *source, struct archive *dest, bool partialprogress = true );
-		void copyData( QString filename, struct archive *dest, bool partialprogress = true );
 		bool writeFile( const QString& fileName, struct archive* arch, struct archive_entry* entry );
 
 		int m_cachedArchiveEntryCount;