大类和小类相同，小类从大类赋值

graph/src/main/java/org/diagbot/graph/medicationProcess/PushTreat.java

@@ -390,6 +390,7 @@ public class PushTreat {
                 if (splits[0].equals(splits[1])) {
                     sub = "";
                     big = splits[0];
+                    sub = splits[0];
                 } else {
                     big = splits[0];
                     sub = splits[1];