epp: Fix potential compiler warning
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@ -2372,7 +2372,7 @@ special_symbol(HASHNODE * hp, cpp_reader * pfile)
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if (ip->fname)
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true_indepth++;
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bufx = (char *)alloca(8); /* Eight bytes ought to be more than enough */
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bufx = (char *)alloca(12);
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sprintf(bufx, "%d", true_indepth - 1);
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buf = bufx;
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break;
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