Adapt PythonTest.mk to CppunitTest's b308d0b0

"More helpful message how to re-run a unit test that failed."

Change-Id: I2d99d1e7ff5fd326552f56d21fad7d1211966b2b

solenv/gbuild/PythonTest.mk

@@ -46,7 +46,7 @@ $(call gb_PythonTest_get_target,%) :
 			$(MODULES) \
 		$(if $(gb_CppunitTest__interactive),, \
 			> $@.log 2>&1 \
-			|| (cat $@.log && $(UNIT_FAILED_MSG) \
+			|| (cat $@.log && $(call gb_UNIT_FAILED_MSG,$*) \
 				$(if $(value gb_CppunitTest_postprocess), \
 					&& $(call gb_CppunitTest_postprocess,$(gb_PythonTest_EXECUTABLE_GDB),$@.core,139)) \
 				&& false))))