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common: hash: zero end the string instead of the pointer

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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>
This commit is contained in:
Jeroen Hofstee 2014-06-09 11:02:02 +02:00 committed by Tom Rini
parent c71630838d
commit 8b9cc866c1
1 changed files with 1 additions and 1 deletions
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2
common/hash.c
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@ -214,7 +214,7 @@ static void store_result(struct hash_algo *algo, const u8 *sum,
sprintf(str_ptr, "%02x", sum[i]);
str_ptr += 2;
}
str_ptr = '\0';
*str_ptr = '\0';
setenv(dest, str_output);
} else {
ulong addr;