Remove unnecessary ssize_t posix-ism

ssize_t is not always available and the cast it was used in wasn't necessary in the first place, the value already has the right type. Note that the field malloc_limit is an int64_t in JSMemoryUsage whereas it is a size_t in JSMallocState.

Author: bnoordhuis

quickjs.c

@@ -6242,7 +6242,7 @@ void JS_DumpMemoryUsage(FILE *fp, const JSMemoryUsage *s, JSRuntime *rt)
  "BigNum "
 #endif
  CONFIG_VERSION " version, %d-bit, malloc limit: %"PRId64"\n\n",
- (int)sizeof(void *) * 8, (int64_t)(ssize_t)s->malloc_limit);
+ (int)sizeof(void *) * 8, s->malloc_limit);
 #if 1
  if (rt) {
  static const struct {