Unicode char 0x2022 shows as 0x20ac

I noticed this when using the 'bullet' character in my code and seeing instead the Euro symbol. So I reproduced with the generic 'extended.c' demo.

Modified it so that font config 'range' includes the 0x2000 to 0x2fff, and changed the font to Ubuntu-R.ttf which includes the characters, and then inserted the bullet character in one of the display texts.

Here's a screenshot. The Euro should be a bullet, and the square box should be a Euro sign:

I've verified that inside the nk_draw_list_add_text() function, the nk_rune 0x2022 is parsed off the string. Therefore it must be the font->query() that's at fault.

Reproduce the issue with the generic extended.c demo, Ubuntu-R.ttf, and a font range covering 0x2000–0x2fff. Start by tracing font->query() after confirming nk_draw_list_add_text() receives 0x2022. Done means the bullet renders as a bullet and the Euro sign renders as a Euro sign.

Written by the indexing model from the issue text.