Fix memory leak in test_suite_md.function
diff --git a/tests/suites/test_suite_md.function b/tests/suites/test_suite_md.function
index 5c453e4..6ac834e 100644
--- a/tests/suites/test_suite_md.function
+++ b/tests/suites/test_suite_md.function
@@ -231,6 +231,7 @@
 
 exit:
     mbedtls_md_free( &ctx );
+    mbedtls_md_free( &ctx_copy );
 }
 /* END_CASE */
 
@@ -284,6 +285,7 @@
 
 exit:
     mbedtls_md_free( &ctx );
+    mbedtls_md_free( &ctx_copy );
 }
 /* END_CASE */