Extra spaces removed by the formatter [skip ci]

Author: harawata

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

@@ -70,7 +70,7 @@ public Set<String> getPropertyNames() {
   public int size() {
     return loaderMap.size();
   }
-  
+
   public boolean isEmpty() {
     return loaderMap.isEmpty();
   }