Rewrite the toggle menu setup macro code to fix compile error

Compiling tig version 1.2.1 on OS/2 using GCC version 4.5.4 fails with:

    tig.c: In function 'toggle_option':
    tig.c:2696:3: error: subscripted value is neither array nor pointer
    tig.c:2696:3: error: subscripted value is neither array nor pointer
    tig.c:2696:3: error: subscripted value is neither array nor pointer
    tig.c:2696:3: error: subscripted value is neither array nor pointer
    tig.c:2696:3: error: subscripted value is neither array nor pointer
    tig.c:2696:3: error: subscripted value is neither array nor pointer
    tig.c:2696:3: error: subscripted value is neither array nor pointer

Change the macro to not have logic in the macro responsible for
initializing the toggle menu in an attempt to fix the compile error.