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                COLLATIONS ARE USED.

ISSUE :
-------
Code points of HALF WIDTH KATAKANA in SJIS/CP932 range from
A1 to DF. In function my_wildcmp_mb_bin_impl while comparing
such single byte code points, there is a code which compares
signed character with unsigned character. Because of this,
comparisons of two same code points representing a HALF
WIDTH KATAKANA character always fails.

Solution:
---------
A code point of HALF WIDTH KATAKANA at-least need 8 bits.
Promoting the variable from uchar to int will fix the issue.

mysql-test/t/ctype_cp932.test:
  Tests which have conditions
  LIKE 'STRING PATTERN WITH HALF WIDTH KATAKANA'.
strings/ctype-mb.c:
  A code point of HALF WIDTH KATAKANA at-least need 8 bits.
  Promoting the variable from uchar to int will fix the issue.