COMP: fix warning about comparison signed - unsigned
Alex
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@ -329,7 +329,8 @@ static int copy_ar(CF *cfp, off_t size)
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FILE* from = cfp->rFile;
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FILE* to = cfp->wFile;
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while (sz &&
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(nr = fread(buf, 1, sz < sizeof(buf) ? sz : sizeof(buf), from )) > 0) {
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(nr = fread(buf, 1, sz < off_t(sizeof(buf)) ? sz : sizeof(buf), from ))
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> 0) {
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sz -= nr;
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for (int off = 0; off < nr; nr -= off, off += nw)
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if ((nw = fwrite(buf + off, 1, nr, to)) < 0)
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