fix(Makefile): add missing endif instruction

Signed-off-by: Diogo Costa <[email protected]>

Author: Diogo21Costa

Makefile

@@ -395,4 +395,6 @@ tests_dir := $(cur_dir)/tests
 -include $(tests_dir)/tests.mk
 
 .PHONY: tests
-tests: framework 
+tests: framework 
+
+endif