Start of event framework.

This compiles correctly, but doesn't actually deliver events yet.
As part of this, I've made most of the initializables in nng
safe to tear-down if uninitialized (or set to zero e.g. via calloc).

This makes it loads easier to write the teardown on error code, since
I can deinit everything, without worrying about which things have been
initialized and which have not.

1 files changed, 6 insertions, 2 deletions

diff --git a/src/protocol/pair/pair.c b/src/protocol/pair/pair.c
index 0d8b32fe..d6c2eedf 100644
--- a/src/protocol/pair/pair.c
+++ b/src/protocol/pair/pair.c
@@ -64,7 +64,9 @@ nni_pair_sock_fini(void *arg)
 {
 	nni_pair_sock *psock = arg;
 
-	NNI_FREE_STRUCT(psock);
+	if (psock != NULL) {
+		NNI_FREE_STRUCT(psock);
+	}
 }
 
 
@@ -89,7 +91,9 @@ nni_pair_pipe_fini(void *arg)
 {
 	nni_pair_pipe *ppipe = arg;
 
-	NNI_FREE_STRUCT(ppipe);
+	if (ppipe != NULL) {
+		NNI_FREE_STRUCT(ppipe);
+	}
 }