Fix depsinstall for mosquitto 1.5.5

Makefile

@@ -142,7 +142,7 @@ $(DCDBDEPSPATH)/mosquitto-$(MOSQUITTO_VERSION)/.built: $(DCDBDEPSPATH)/mosquitto
 
 $(DCDBDEPSPATH)/mosquitto-$(MOSQUITTO_VERSION)/.installed: $(DCDBDEPSPATH)/mosquitto-$(MOSQUITTO_VERSION)/.built | $(DCDBDEPLOYPATH)
 	@echo "Installing Mosquitto library..."
-	cd $(DCDBDEPSPATH)/mosquitto_build && make install && touch $(@)
+	cd $(@D)/build && make install && touch $(@)
 
 $(DCDBDEPSPATH)/boost_$(BOOST_VERSION_U)/.built: $(DCDBDEPSPATH)/boost_$(BOOST_VERSION_U)/.patched
 	@echo "Building Boost..."