Remove more lint.

Change-Id: I48714db4169d9ea0536342809361210910ee2091
diff --git a/src/reference_table.cc b/src/reference_table.cc
index e56f5ec..dd32765 100644
--- a/src/reference_table.cc
+++ b/src/reference_table.cc
@@ -60,7 +60,7 @@
 }
 
 struct ObjectComparator {
-  bool operator()(const Object* obj1, const Object* obj2){
+  bool operator()(const Object* obj1, const Object* obj2) {
     // Ensure null references and cleared jweaks appear at the end.
     if (obj1 == NULL) {
       return true;