warnings: fix "value computed is not used" warnings

This fixes warnings that are caused by calling GET_LONG without using
its return value, e.g.:

  sv_save.c: In function ‘StreamIn_player_t’:
  ../../src/i_swap.h:34:20: warning: value computed is not used [-Wunused-value]
   #define LONG(x)   ((signed int) SDL_SwapLE32(x))
                    ^
  sv_save.c:33:18: note: in expansion of macro ‘LONG’
   #define GET_LONG LONG(*SavePtr.l++)
                  ^
  sv_save.c:349:5: note: in expansion of macro ‘GET_LONG’
       GET_LONG;
       ^

Introducing a "long dummy" variable and calling "dummy = GET_LONG" does
not help, because this provokes another warning, rightfully so:

  sv_save.c: In function ‘StreamIn_player_t’:
  sv_save.c:346:10: warning: variable ‘dummy’ set but not used [-Wunused-but-set-variable]
     long dummy;

Assigning the return value directly to the struct field results in:

  sv_save.c: In function ‘StreamIn_player_t’:
  sv_save.c:349:13: warning: assignment makes pointer from integer without a cast [-Wint-conversion]
     str->mo = GET_LONG;

Adding the cast to "(void *)" results in:

  sv_save.c: In function ‘StreamIn_player_t’:
  sv_save.c:349:15: warning: cast to pointer from integer of different size [-Wint-to-pointer-cast]
     str->mo = (void *) GET_LONG;

Adding the intermediate cast to "(intptr_t)" finally silences the
compiler. Phew!

0 files changed, 0 insertions, 0 deletions