Add posix_tnode to <search.h>.

In r307227 I've refactored the binary search tree functions to use the
posix_tnode type. As this change does not apply cleanly to this version
of FreeBSD, only make the change that matters: add the definition of the
newly introduced type.

This will ease source-level compatibility going forward.

1 files changed, 2 insertions, 0 deletions

diff --git a/include/search.h b/include/search.h
index 4e4606f..40b736a 100644
--- a/include/search.h
+++ b/include/search.h
@@ -43,6 +43,8 @@ struct que_elem {
 	struct que_elem *next;
 	struct que_elem *prev;
 };
+#else
+typedef void posix_tnode;
 #endif
 
 __BEGIN_DECLS