common: hash: zero end the string instead of the pointer
authorJeroen Hofstee <jeroen@myspectrum.nl>
Mon, 9 Jun 2014 09:02:02 +0000 (11:02 +0200)
committerTom Rini <trini@ti.com>
Wed, 11 Jun 2014 20:27:05 +0000 (16:27 -0400)
commit8b9cc866c10787b057b4ac91c8783cfa752f1151
tree4a9462b59d188da3ba7d3133a385b38c9f8dddb2
parentc71630838d908e410ee83f0164327e1fd515f1ca
common: hash: zero end the string instead of the pointer

if algo->digest_size is zero nothing is set in the str_output
buffer. An attempt is made to zero end the buffer, but the
pointer to the buffer is set to zero instead. I am unaware if
it causes any actual problems, but solves the following warning:

common/hash.c:217:13: warning: expression which evaluates to zero treated as
a null pointer constant of type 'char *' [-Wnon-literal-null-conversion]
                str_ptr = '\0';
                          ^~~~

cc: Simon Glass <sjg@chromium.org>
Signed-off-by: Jeroen Hofstee <jeroen@myspectrum.nl>
common/hash.c