Description:

@gemu2015 This fix avoids a crash when display.ini is lacking the final #

Here, when strchr returns NULL, we can't call again strchr with NULL pointer:

lp = strchr(lp, '\n');
      if (!lp) {
        lp = strchr(lp, ' ');

Can you please check my fix?

Checklist:

• The pull request is done against the latest development branch
• Only relevant files were touched
• Only one feature/fix was added per PR and the code change compiles without warnings
• The code change is tested and works with Tasmota core ESP8266 V.2.7.8
• The code change is tested and works with Tasmota core ESP32 V.3.1.0.241030
• I accept the CLA.

NOTE: The code change must pass CI tests. Your PR cannot be merged unless tests pass