If a patchset contains an EOF marker (Ctrl-Z) the blob diff terminates
at that point.  This permits gitk to ignore the eof and continue to
display any subsequent blobs and also displays a sensible representation
of the eof char.
Signed-off-by: NPat Thoyts <patthoyts@users.sourceforge.net>
Signed-off-by: NPaul Mackerras <paulus@samba.org>