Add simple memory leak check to all tests.

Wrap all tests with a memory balance check to detect potential
memory leaks.
Fixed a few tests that had memory leaks contained in the tests
themselves.

Signed-off-by: U. Artie Eoff <ullysses.a.eoff@intel.com>

tests/array-test.c

@@ -133,4 +133,6 @@ TEST(array_for_each)
 	wl_array_for_each(p, &array)
 		assert(*p == elements[i++]);
 	assert(i == 5);
+
+	wl_array_release(&array);
 }