[BUILD] make ebtree headers multiple-include compatible
ebtree did not support being included multiple times.
diff --git a/include/common/ebtree.h b/include/common/ebtree.h
index 7a595b9..ebd1e91 100644
--- a/include/common/ebtree.h
+++ b/include/common/ebtree.h
@@ -246,6 +246,8 @@
*/
+#ifndef _COMMON_EBTREE_H
+#define _COMMON_EBTREE_H
#include <stdlib.h>
@@ -716,6 +718,7 @@
void eb_delete(struct eb_node *node);
REGPRM1 struct eb_node *eb_insert_dup(struct eb_node *sub, struct eb_node *new);
+#endif /* _COMMON_EBTREE_H */
/*
* Local variables: