Remove misleading (char*) casts.

[Christian Stimming]

Log Message:
-----------
Remove misleading (char*) casts.

2005-10-08  Christian Stimming  <stimming at tuhh.de>

	* src/engine/Transaction.c: Remove misleading (char*) casts by
	Linas Vepstas from 2003-09-14, but nevertheless the code doesn't
	have any errorneous double-free's at this point.

Modified Files:
--------------
    gnucash:
        ChangeLog
    gnucash/src/engine:
        kvp_frame.c