ntdll_winetest:exception enters kdbg on int3 exception test

Tested in CMake build, revision 53146, on VBox 4.1.0. During ntdll:exception
winetest runtime it enters kdbg on int3 with the following call stack:

[0x00e00000]
modules/rostests/winetests/ntdll/exception.c:668 (test_exceptions)
modules/rostests/winetests/ntdll/exception.c:1468 (func_exception)
include/reactos/wine/test.h:554 (run_test)

Line 668 being:
run_exception_test(int3_handler, NULL, int3_code, sizeof(int3_code), 0);

The address of EIP is the one at which all test exceptions are being executed.