Avoid re-wrapping ExecutorException.

Author: harawata

src/main/java/org/apache/ibatis/executor/loader/ResultLoaderMap.java

@@ -1,5 +1,5 @@
 /**
- *    Copyright 2009-2015 the original author or authors.
+ *    Copyright 2009-2017 the original author or authors.
  *
  *    Licensed under the Apache License, Version 2.0 (the "License");
  *    you may not use this file except in compliance with the License.
@@ -244,6 +244,8 @@ public Object run() throws Exception {
         } else {
           configurationObject = factoryMethod.invoke(null);
         }
+      } catch (final ExecutorException ex) {
+        throw ex;
       } catch (final NoSuchMethodException ex) {
         throw new ExecutorException("Cannot get Configuration as factory class ["
                 + this.configurationFactory + "] is missing factory method of name ["