Removed potential error while trying to read average_snr_file.txt.
Removed potential error while trying to read average_snr_file.txt.

danlurie/C-PAC,danlurie/C-PAC,sgiavasis/C-PAC,sgiavasis/C-PAC,sgiavasis/C-PAC,roijo/C-PAC_complexitytools,sgiavasis/C-PAC,danlurie/C-PAC,roijo/C-PAC_complexitytools,roijo/C-PAC_complexitytools,danlurie/C-PAC,roijo/C-PAC_complexitytools