Code Duplication    Length = 5-5 lines in 2 locations

src/PhpSpreadsheet/Shared/OLERead.php 2 locations

@@ 202-206 (lines=5) @@
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        $block = $this->props[$stream]['startBlock'];
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        while ($block != -2) {
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            $pos = ($block + 1) * self::BIG_BLOCK_SIZE;
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            $streamData .= substr($this->data, $pos, self::BIG_BLOCK_SIZE);
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            $block = self::getInt4d($this->bigBlockChain, $block * 4);
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        }
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        return $streamData;
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    }
@@ 223-227 (lines=5) @@
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        $block = $bl;
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        $data = '';
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        while ($block != -2) {
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            $pos = ($block + 1) * self::BIG_BLOCK_SIZE;
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            $data .= substr($this->data, $pos, self::BIG_BLOCK_SIZE);
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            $block = self::getInt4d($this->bigBlockChain, $block * 4);
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        }
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        return $data;
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    }