Added serial RPC transport and lots more...

Added RPC function to get server version number.
Substantially reworked GNUMakefile with conditionals.
Renamed rpc_*() and xdr_*() to hal_*() for consistency.
Moved hal_io_fmc.c from stm32 repo.

1 files changed, 2 insertions, 1 deletions

diff --git a/rpc_hash.c b/rpc_hash.c
index 1bce86e..3c4c79b 100644
--- a/rpc_hash.c
+++ b/rpc_hash.c
@@ -143,8 +143,9 @@ static inline handle_slot_t *find_handle(const hal_hash_handle_t handle)
   return NULL;
 }
 
-static inline free_handle(handle_slot_t *slot)
+static inline void free_handle(handle_slot_t *slot)
 {
+  if (slot != NULL)
     /* state is a union, so this this works for hash and hmac */
     slot->state.hash = NULL;
 }