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libbb: fix potential NULL pointer use

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function                                             old     new   delta
unicode_conv_to_printable2                           193     216     +23

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
This commit is contained in:
Denys Vlasenko 2018-09-03 10:36:51 +02:00
parent 3060992ec9
commit 28d91d754e
1 changed files with 2 additions and 0 deletions
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2
libbb/unicode.c
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@ -1121,6 +1121,8 @@ static char* FAST_FUNC unicode_conv_to_printable2(uni_stat_t *stats, const char
dst[dst_len++] = ' ';
}
}
if (!dst) /* for example, if input was "" */
dst = xzalloc(1);
dst[dst_len] = '\0';
if (stats) {
stats->byte_count = dst_len;