E.memoryArea not working on ESP8266 (due to char-iterator ?)

@tve I know you're doing some benchmarking at the moment? Please could you try:

static ALWAYS_INLINE char jsvStringIteratorGetChar(JsvStringIterat­or *it) {
  if (!it->ptr) return 0;
~ifdef ESP8266
  int addr = (int)it->ptr + (int)it->charIdx;
  uint32_t bytes = *(uint32_t*)(addr & ~3);
  return ((uint8_t*)&bytes)[(int)addr & 3];
~else
  return it->ptr[it->charIdx];
~endif
}

// and

static ALWAYS_INLINE char jslNextCh(JsLex *lex) {
  if (!lex->it.ptr) return 0;
~ifdef ESP8266
  int addr = (int)lex->it.ptr + (int)lex->it.charIdx;
  uint32_t bytes = *(uint32_t*)(addr & ~3);
  return ((uint8_t*)&bytes)[(int)addr & 3];
~else
  return (char)(lex->it.ptr[lex->it.charIdx]);
~endif
}

// ~ should be a hash - the forum 'eats' it otherwise

And see if it hurts performance much? My hope is that actually it won't have that much of an effect at all.

If not, it'd be great to get it in as it could really help with the low RAM situation...