Fix a variable name
The first argument of `WARN_SPACE_CHAR` is always `c2` in caller side, so `c` equals to `c2`.
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parse.y
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parse.y
@ -8129,7 +8129,7 @@ escaped_control_code(int c)
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}
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#define WARN_SPACE_CHAR(c, prefix) \
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rb_warn1("invalid character syntax; use "prefix"\\%c", WARN_I(c2))
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rb_warn1("invalid character syntax; use "prefix"\\%c", WARN_I(c))
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static int
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tokadd_codepoint(struct parser_params *p, rb_encoding **encp,
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