Fix memory leak in semaphore self tests.

Change-Id: I82a5c8af6f81692704bd7f6a6b1248685883d92a
diff --git a/framework/delibs/dethread/deThreadTest.c b/framework/delibs/dethread/deThreadTest.c
index 62e6526..2af44de 100644
--- a/framework/delibs/dethread/deThreadTest.c
+++ b/framework/delibs/dethread/deThreadTest.c
@@ -461,6 +461,8 @@
 		deThread_destroy(producer);
 		deThread_destroy(consumer);
 
+		deSemaphore_destroy(testBuffer.empty);
+		deSemaphore_destroy(testBuffer.fill);
 		DE_TEST_ASSERT(testBuffer.producerSum == testBuffer.consumerSum);
 	}
 }