enable unit test run in Makefile

Author: renukamanavalan

src/sonic-eventd/Makefile

@@ -43,7 +43,7 @@ eventd-tests: $(TEST_OBJS)
 	@echo 'Invoking: G++ Linker'
 	$(CC) $(LDFLAGS) -o $(EVENTD_TEST) $(TEST_OBJS) $(LIBS) $(TEST_LIBS)
 	@echo 'Finished building target: $@'
-	@echo 'Blocked $(EVENTD_TEST)'
+	$(EVENTD_TEST)
 	@echo 'Finished running tests'
 	@echo ' '
 

src/sonic-eventd/tools/events_tool.cpp

@@ -247,7 +247,7 @@ do_send(const string infile, int cnt, int pause)
 
 void usage()
 {
-    printf(s_usage);
+    printf("%s", s_usage);
     exit(-1);
 }