fix unit tests: do not stub pthread_cond_wait

and fix the tests instead.
Some unit tests depend on pthread_cond_wait to work as expected.

src/lib/parameters/ParameterTest.cpp

@@ -43,6 +43,7 @@ class ParameterTest : public ::testing::Test
 public:
 	void SetUp() override
 	{
+		param_control_autosave(false);
 		param_reset_all();
 	}
 };