Adding missing end-of-file newlines...

tests/test_compationfilter.rs

@@ -48,4 +48,4 @@ fn compaction_filter_test() {
         assert!(db.get(b"_k").unwrap().is_none());
         assert_eq!(&*db.get(b"%k").unwrap().unwrap(), b"secret");
     }
-}
+}

tests/test_db.rs

@@ -180,4 +180,4 @@ fn set_option_test() {
         ];
         db.set_options(&multiple_options).unwrap();
     }
-}
+}

tests/util/mod.rs

@@ -39,4 +39,4 @@ impl AsRef<Path> for DBPath {
     fn as_ref(&self) -> &Path {
         &self.path
     }
-}
+}