Fixed bug in downloadFile.
Fixed bug in downloadFile.

CVML/vlbenchmarks,andersbll/vlbenchmarks,andersbll/vlbenchmarks,vlfeat/vlbenchmarks,andersbll/vlbenchmarks,vlfeat/vlbenchmarks,vlfeat/vlbenchmarks,CVML/vlbenchmarks,CVML/vlbenchmarks,andersbll/vlbenchmarks