More prefer SDL_zero*()

Transform clearing of arrays into SDL_zeroa(), and
clearing through a T* with size(T) into SDL_zerop().

Extends commit 83fb7b6636.

src/haptic/darwin/SDL_syshaptic.c

@@ -785,7 +785,7 @@ static bool SDL_SYS_ToFFEFFECT(SDL_Haptic *haptic, FFEFFECT *dest, const SDL_Hap
     DWORD *axes = NULL;
 
     // Set global stuff.
-    SDL_memset(dest, 0, sizeof(FFEFFECT));
+    SDL_zerop(dest);
     dest->dwSize = sizeof(FFEFFECT);     // Set the structure size.
     dest->dwSamplePeriod = 0;            // Not used by us.
     dest->dwGain = 10000;                // Gain is set globally, not locally.

src/haptic/hidapi/SDL_hidapihaptic_lg4ff.c

@@ -737,7 +737,7 @@ static int lg4ff_timer(struct lg4ff_device *device)
 
     // XXX how to detect stacked up effects here?
 
-    SDL_memset(parameters, 0, sizeof(parameters));
+    SDL_zeroa(parameters);
 
     gain = (Uint16)((Uint32)device->gain * device->app_gain / 0xffff);
 
@@ -895,7 +895,7 @@ static void *SDL_HIDAPI_HapticDriverLg4ff_Open(SDL_Joystick *joystick)
         SDL_OutOfMemory();
         return NULL;
     }
-    SDL_memset(ctx, 0, sizeof(lg4ff_device));
+    SDL_zerop(ctx);
 
     ctx->hid_handle = joystick;
     if (lg4ff_init_slots(ctx) != 0) {
@@ -1200,7 +1200,7 @@ static bool SDL_HIDAPI_HapticDriverLg4ff_SetAutocenter(SDL_HIDAPI_HapticDevice *
         }
         expand_a = expand_a >> 1;
 
-        SDL_memset(cmd, 0x00, 7);
+        SDL_zeroa(cmd);
         cmd[0] = 0xfe;
         cmd[1] = 0x0d;
         cmd[2] = (Uint8)(expand_a / 0xaaaa);
@@ -1215,7 +1215,7 @@ static bool SDL_HIDAPI_HapticDriverLg4ff_SetAutocenter(SDL_HIDAPI_HapticDevice *
         }
 
         // enable
-        SDL_memset(cmd, 0x00, 7);
+        SDL_zeroa(cmd);
         cmd[0] = 0x14;
 
         ret = SDL_SendJoystickEffect(ctx->hid_handle, cmd, sizeof(cmd));

src/haptic/linux/SDL_syshaptic.c

@@ -603,7 +603,7 @@ void SDL_SYS_HapticClose(SDL_Haptic *haptic)
     }
 
     // Clear the rest.
-    SDL_memset(haptic, 0, sizeof(SDL_Haptic));
+    SDL_zerop(haptic);
 }
 
 /*
@@ -725,7 +725,7 @@ static bool SDL_SYS_ToFFEffect(struct ff_effect *dest, const SDL_HapticEffect *s
     const SDL_HapticLeftRight *leftright;
 
     // Clear up
-    SDL_memset(dest, 0, sizeof(struct ff_effect));
+    SDL_zerop(dest);
 
     switch (src->type) {
     case SDL_HAPTIC_CONSTANT:

src/haptic/windows/SDL_dinputhaptic.c

@@ -599,7 +599,7 @@ static bool SDL_SYS_ToDIEFFECT(SDL_Haptic *haptic, DIEFFECT *dest,
     DWORD *axes;
 
     // Set global stuff.
-    SDL_memset(dest, 0, sizeof(DIEFFECT));
+    SDL_zerop(dest);
     dest->dwSize = sizeof(DIEFFECT);     // Set the structure size.
     dest->dwSamplePeriod = 0;            // Not used by us.
     dest->dwGain = 10000;                // Gain is set globally, not locally.