support mysql procedure declare exception (last time forget this part)

src/main/java/com/alibaba/druid/sql/parser/Token.java

@@ -145,6 +145,7 @@ public enum Token {
     SQLWARNING("SQLWARNING"),
     SQLEXCEPTION("SQLEXCEPTION"),
     FOUND("FOUND"),
+    CONDITION("CONDITION"),
     
     //postgresql
     WINDOW("WINDOW"),