Fix a few problems to get CVS to compile.

[Derek Atkins]

Log Message:
-----------
Fix a few problems to get CVS to compile.
  test-core/test-stuff: remove unused variable.
  register/ledger-core/split-register-control: insert do .. while
      because the code still uses "break"s to exit out.

Modified Files:
--------------
    gnucash/src/register/ledger-core:
        split-register-control.c
    gnucash/src/test-core:
        test-stuff.c