use EC_NO_ID instead of NULL

[protos/libecoli.git] / lib / ecoli_node.h

diff --git a/lib/ecoli_node.h b/lib/ecoli_node.h
index 8afcdbc..ebd8323 100644 (file)
--- a/lib/ecoli_node.h
+++ b/lib/ecoli_node.h
@@ -69,6 +69,8 @@
 #include <sys/types.h>
 #include <stdio.h>
 
+#define EC_NO_ID "no-id"
+
 #define EC_NODE_ENDLIST ((void *)1)
 
 struct ec_node;