pki: Check length of commands array before accessing command in --help
As --help is counted as command as well, the array is not null-terminated and we have to check for MAX_COMMANDS. Fixes #550.
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@ -200,7 +200,7 @@ int command_usage(char *error)
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fprintf(out, "usage:\n");
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if (active == help_idx)
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{
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for (i = 0; cmds[i].cmd; i++)
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for (i = 0; i < MAX_COMMANDS && cmds[i].cmd; i++)
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{
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fprintf(out, " pki --%-7s (-%c) %s\n",
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cmds[i].cmd, cmds[i].op, cmds[i].description);
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