Add wide character test case and corpus

test/de_fuzz/corpus/09ddbffe27633f26351167c38ef10a942862462f

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+8^\l*(?:((.Ô*?)\W*(?1)\§*\2[abc]|	|((.)\)W*(?1)\W*\4|\ZZZZZZZZZZZZZZZZZZZZZZ˙˙˙˙˙˙˙˙˙ŔŔŔŔŔŔŔŔŔŔŔŔŔŔŔŔŔŔ˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙\pd\)W*(?1)\W*\4|\ZZZZZZZZZZZZZZZZZZZZZZ˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙\pd˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙\pdquick brown )ox																		

test/de_fuzz/corpus/0ce83d2f8eb3bf46aa65093a0a4a0599bc69e095

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+(?$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$(R&one),

test/de_fuzz/corpus/1cd3f923596b5fe430cfb793b059e1a87c07f923

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+'è  (?: [\040\t] |  \(
+(?:  [^\\\x80-\xff\n\015()]  |  \\ [^\x80-\xff]  |  \( (?:  [^\\\x80-\xff\n\015()]  |  \\ [^\x80-\xff]  )* \)  )*
+\)  )*                          # optional leading comment
+(?:    (?:
+[^(\040)<>@,;:".\\\[\]\000-\037\x8ÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿ0-\xff]+    # some number of atom characters...
+(?![^(\040)<>@,;:".\\\[\]\000-\037\x80-\xff]) # ..not followed by something that could be part of an atom
+|
+"^\x80-\xff]  |  \( (?:  [^\\\(80-\xff\n\015()]  |  \\ [^\x80-\xff]  )* \)  )*
+\)  )*                          # optional l[ading comment              #  o  r
+\:\ [^\x80-\xff]         

test/de_fuzz/corpus/2415bcefc7bbb819b9a41b835d2153402dfb368f

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+
␍((*ACCEPT)›››››››››››››\L™››››››››(?>a(?i)bc)*ACCEPT)›››››››››››››\L™››››››››(?>a(?i)bc)ba++c