N393: Initialise CGo static function pointers to NULL. (#394)
N393: Initialise CGo static function pointers to NULL. (#394)

These are used to store the result of `dlsym` calls during CGo
initialisation. We should initialise the pointers to `NULL` for safety
reasons.
FFIG/ffig,FFIG/ffig,FFIG/ffig,FFIG/ffig,FFIG/ffig,jbcoe/C_API_generation,FFIG/ffig,FFIG/ffig,FFIG/ffig,jbcoe/C_API_generation,jbcoe/C_API_generation,jbcoe/C_API_generation