Code Duplication    Length = 4-4 lines in 2 locations

library/Requests/IPv6.php 2 locations

@@ 54-57 (lines=4) @@
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			$ip = '0:0:0:0:0:0:0:0';
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		}
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		// ::xxx
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		elseif ($c1 === -1) {
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			$fill = str_repeat('0:', 7 - $c2);
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			$ip   = str_replace('::', $fill, $ip);
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		}
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		// xxx::
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		elseif ($c2 === -1) {
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			$fill = str_repeat(':0', 7 - $c1);
@@ 59-62 (lines=4) @@
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			$ip   = str_replace('::', $fill, $ip);
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		}
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		// xxx::
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		elseif ($c2 === -1) {
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			$fill = str_repeat(':0', 7 - $c1);
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			$ip   = str_replace('::', $fill, $ip);
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		}
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		// xxx::xxx
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		else {
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			$fill = ':' . str_repeat('0:', 6 - $c2 - $c1);