#3 two unused local variables

[Berend de Boer]

***** Warning : Unused local variable.
Line 46 column 3 in UCSTRING (/home/berend/src/ucstring/lib/ucstring.e) :
i: INTEGER;
^
------
****** Warning : Unused local variable.
Line 186 column 3 in UTF8_UTILS (/home/berend/src/ucstring/lib/utf8_utils.e) :
xcp: EXCEPTIONS
^
------
****** 2 warning(s).