align zbuffer on 32Bytes blocks

src/FxEngine/zbuffer.c

@@ -37,7 +37,7 @@ static int32_t* address=0;
 
 static const int32_t clearval[4]={3000,3000,3000,3000};
 
-#define ALIGN 4
+#define ALIGN 32
 static void* buffer_malloc(uint_fast16_t size)
 {
     void *mem = malloc(size+ALIGN+sizeof(void*));