fix build problem

jacquesqiao · jacquesqiao · commit 83a577e8ce41 · 2018-06-11T21:02:43.000+08:00
diff --git a/paddle/fluid/framework/details/ssa_graph_checker.h b/paddle/fluid/framework/details/ssa_graph_checker.h
@@ -19,7 +19,7 @@
 namespace paddle {
 namespace framework {
 namespace details {
-class SSAGraph;
+struct SSAGraph;
 
 class SSAGraghBuilderWithChecker : public SSAGraphBuilder {
  public:
