K 10
svn:author
V 3
uqs
K 8
svn:date
V 27
2013-04-20T12:41:05.606480Z
K 7
svn:log
V 229
bin/df: Fix unitialized use in prtstat

While here:
- use NULL in the context of pointers
- use memset instead of bzero throughout the file
- free memory to appease clang static analyzer

Found by:	Coverity Scan (the UNINIT one)

END