[PATCH] fixup: reference to uninitialized variable with invalid sequence

[Norihiro Tanaka]

Uninitialized variable are referred with invalid sequence in
str_append_modified().

When mbrtowc() returns (size_t) -1, wc is not changed, even if wc is
uninitialized.  below may return unexpected result in order that the
value is referred at a following position in source code.

  $ echo a | LC_ALL=ja_JP.eucJP ./sed/sed -e 's/a/b\U\xb2c/'

0001-fixup-reference-to-uninitialized-variable-with-inval.patch
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