Check if SDL_ttf is initialized.
Defined in <SDL3_ttf/SDL_ttf.h>
int TTF_WasInit(void);
(int) Returns the current number of initialization calls, that need to eventually be paired with this many calls to TTF_Quit().
This reports the number of times the library has been initialized by a call to TTF_Init(), without a paired deinitialization request from TTF_Quit().
In short: if it's greater than zero, the library is currently initialized and ready to work. If zero, it is not initialized.
Despite the return value being a signed integer, this function should not return a negative number.
It is safe to call this function from any thread.
This function is available since SDL_ttf 3.0.0.