test: geo: Zero-initialise the from & to structs
test: geo: Zero-initialise the from & to structs

Rather than using memset() on the from & to ac_geo_t structures,
zero-initialise them using the universal zero initialiser for the first
time use, keeping memset for latter clearing.

Signed-off-by: Andrew Clayton <02e0a999c50b1f88df7a8f5a04e1b76b35ea6a88@digital-domain.net>

ac000/libac