fix metadata decomdiing in smart contract verification

apps/explorer/lib/explorer/smart_contract/verifier.ex

@@ -107,6 +107,12 @@ defmodule Explorer.SmartContract.Verifier do
         |> Enum.reverse()
         |> :binary.list_to_bin()
 
+      # Solidity >= 0.5.9; https://github.com/ethereum/solidity/blob/aa4ee3a1559ebc0354926af962efb3fcc7dc15bd/docs/metadata.rst
+      "a265627a7a72305820" <> <<_::binary-size(64)>> <> "64736f6c6343" <> <<_::binary-size(6)>> <> "0032" <> _constructor_arguments ->
+        extracted
+        |> Enum.reverse()
+        |> :binary.list_to_bin()
+
       <<next::binary-size(2)>> <> rest ->
         do_extract_bytecode([next | extracted], rest)
     end

apps/explorer/lib/explorer/smart_contract/verifier/constructor_arguments.ex

@@ -21,6 +21,11 @@ defmodule Explorer.SmartContract.Verifier.ConstructorArguments do
     constructor_arguments
   end
 
+  # Solidity >= 0.5.9; https://github.com/ethereum/solidity/blob/aa4ee3a1559ebc0354926af962efb3fcc7dc15bd/docs/metadata.rst
+  defp extract_contrstructor_arguments("a265627a7a72305820" <> <<_::binary-size(64)>> <> "64736f6c6343" <> <<_::binary-size(6)>> <> "0032" <> constructor_arguments) do
+    constructor_arguments
+  end
+
   defp extract_constructor_arguments(<<_::binary-size(2)>> <> rest) do
     extract_constructor_arguments(rest)
   end