pam: do not leak file descriptor if flock fails
If flock fails, fd is not returned to caller so it cannot clean up.
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@ -198,8 +198,12 @@ static int open_file_and_lock(const char *fn) {
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* as the filesystems in question should be local, and only
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* locally accessible, and most likely even tmpfs. */
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if (flock(fd, LOCK_EX) < 0)
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return -errno;
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if (flock(fd, LOCK_EX) < 0) {
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int r = -errno;
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close_nointr_nofail(fd);
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return r;
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}
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return fd;
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}
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