Fixed a few additional sizeof locations

src/cpuinfo/SDL_cpuinfo.c

@@ -370,7 +370,7 @@ static int CPU_haveARMSIMD(void)
     fd = open("/proc/self/auxv", O_RDONLY | O_CLOEXEC);
     if (fd >= 0) {
         Elf32_auxv_t aux;
-        while (read(fd, &aux, sizeof aux) == sizeof aux) {
+        while (read(fd, &aux, sizeof(aux)) == sizeof(aux)) {
             if (aux.a_type == AT_PLATFORM) {
                 const char *plat = (const char *)aux.a_un.a_val;
                 if (plat) {