Fix FindBugs warning.
diff --git a/src/test/java/com/yahoo/memory/UnsafeUtilTest.java b/src/test/java/com/yahoo/memory/UnsafeUtilTest.java
index 9653e44..7f129b8 100644
--- a/src/test/java/com/yahoo/memory/UnsafeUtilTest.java
+++ b/src/test/java/com/yahoo/memory/UnsafeUtilTest.java
@@ -45,6 +45,8 @@
         fail();
       }
 
+    } catch (RuntimeException e) {
+      throw new RuntimeException("Failed");
     } catch (Exception e) {
       throw new RuntimeException("Failed");
     }