Description of Problem:

When you use the -m switch to merge already sorted files, if one of them is empty
sort core dumps.

If you remove the switch then everything works.

Version-Release number of selected component (if applicable):

I'm using textutils-2.0.14-2 in a rh7.2 system fully updated.

How Reproducible:

sort -m empty_file1 empty_file2

Steps to Reproduce:
1. 
2. 
3. 

Actual Results:

Segmentation Fault

Expected Results:


Additional Information:
	
witout -m works