Corrected

Author: pthpth

src/graphs.jl

@@ -51,7 +51,7 @@ Add a vertex to MetaGraph `g` with label `label` having value `val`.
 Return true if the vertex has been added, false incase the label already exists or vertex was not added.
 """
 function add_vertex!(g::MetaGraph, label, val)
-    if g.haskey(label)
+    if haskey(g,label)
         return false
     added = add_vertex!(g.graph)
     if added