no partial match if trailing data is invalid utf #238
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Avoid returning a partial match if one was found but followed by invalid
UTF, making the result consistent with JIT and unlike:
PCRE2 version 10.34 2019-11-21
re> /.a/match_invalid_utf,allvector,jit
data> b\xb1\=ph,ovector=1
No match
0: <unchanged>
data> b\xb1\=ph,ovector=1,no_jit
Partial match: b\x{b1}
** ovector[1] is not equal to the subject length: 1 != 2
0: 0 1
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Addresses the inconsistency raised by the failing tests in #237 as shown by: