Clean up Record.fillData
Clean up Record.fillData

 * Safer call - check bamRecord.b != nil.
 * Remove extraneous return.

biogo/boom,biogo/boom,cybersiddhu/biogo.boom,cybersiddhu/biogo.boom,biogo/boom,cybersiddhu/biogo.boom,biogo/boom,cybersiddhu/biogo.boom,cybersiddhu/biogo.boom,biogo/boom,biogo/boom,cybersiddhu/biogo.boom