[FIXED-#1008] bam_io: Fixed weird error occurring sporadic during nightly and travis builds.
[FIXED-#1008] bam_io: Fixed weird error occurring sporadic during nightly and travis builds.

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