:eyes: [A few extra null pointer checks are not needed](https://stackoverflow.com/questions/18775608/free-a-null-pointer-anyway-or-check-first "Free a null pointer anyway or check first?") in [the function “spx_drft_clear”](https://gitlab.xiph.org/xiph/speexdsp/-/blob/738e17905e1ca2a1fa932ddd9c2a85d089f4e845/libspeexdsp/smallft.c#L1252 "Update candidate").