base64: fix signed overflow in shift
Signed-off-by: Mans Rullgard <mans@mansr.com>
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@ -44,10 +44,10 @@ static const uint8_t map2[] =
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int av_base64_decode(uint8_t *out, const char *in, int out_size)
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{
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int i, v;
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int i;
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unsigned v = 0;
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uint8_t *dst = out;
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v = 0;
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for (i = 0; in[i] && in[i] != '='; i++) {
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unsigned int index= in[i]-43;
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if (index>=FF_ARRAY_ELEMS(map2) || map2[index] == 0xff)
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