Fix -Wstrict-prototypes warning
Resolves
MODIFY
Sources/CgRPC/shim/cgrpc.h
Sources/CgRPC/shim/cgrpc.h
@@ -203,7 +203,7 @@ void cgrpc_server_start(cgrpc_server *s);
cgrpc_completion_queue *cgrpc_server_get_completion_queue(cgrpc_server *s);
// completion queues
-cgrpc_completion_queue *cgrpc_completion_queue_create_for_next();
+cgrpc_completion_queue *cgrpc_completion_queue_create_for_next(void);
grpc_event cgrpc_completion_queue_get_next_event(cgrpc_completion_queue *cq,
double timeout);
void cgrpc_completion_queue_drain(cgrpc_completion_queue *cq);

MODIFY
Sources/CgRPC/shim/completion_queue.c
Sources/CgRPC/shim/completion_queue.c
#include <stdio.h>
-grpc_completion_queue *cgrpc_completion_queue_create_for_next() {
+grpc_completion_queue *cgrpc_completion_queue_create_for_next(void) {
return grpc_completion_queue_create_for_next(NULL);
}

Fix -Wstrict-prototypes warning

Resolves https://github.com/grpc/grpc-swift/issues/294.