[FIX] clear header in readHeader routine. Before there were strange results if the header that goes as argument into this routine was not empty.
[FIX] clear header in readHeader routine. Before there were strange results if the header that goes as argument into this routine was not empty.

hannespetur/SeqAnHTS,hannespetur/SeqAnHTS,hannespetur/SeqAnHTS,ktrappe/seqan,ktrappe/seqan,hannespetur/SeqAnHTS,bestrauc/seqan,xenigmax/seqan,ktrappe/seqan,ktrappe/seqan,ktrappe/seqan,hannespetur/SeqAnHTS,bestrauc/seqan,xenigmax/seqan,ktrappe/seqan,bestrauc/seqan,xenigmax/seqan,hannespetur/SeqAnHTS,xenigmax/seqan,xenigmax/seqan,ktrappe/seqan,ktrappe/seqan,bestrauc/seqan,bestrauc/seqan,hannespetur/SeqAnHTS,xenigmax/seqan,xenigmax/seqan,xenigmax/seqan,bestrauc/seqan,bestrauc/seqan,bestrauc/seqan,hannespetur/SeqAnHTS,ktrappe/seqan,hannespetur/SeqAnHTS