fix: It base64 error if use with WifiManager

[mrthiti]

If use with WifiManager that it error about base64 show in below.

The root cause is base64.h and base64.c conflict with core libraries.

[MarkBarbieri]

Did you load just this one include in wifi_info.h?

#include <WiFiManager.h>

I think some examples also include other headers, including base64.h.

When I include only this header, I don't have these conflicts.

Did you manually add extra libraries like ESP8266Webserver? I think that's also not required as it's included in WiFiManager and will also cause this conflict

[mrthiti]

Yes, I include "#include <WiFiManager.h>" in my project that it Error because in WiFiManager include "base64.h" as well.

I mean WiFiManager use ESP8266Webserver then ESP8266Webserver include base64.h.

[thenewwazoo]

I just hit this bug. @Mixiaoxiao, it would be wonderful if this (and the other PRs) could be merged.