mosquitto: fix whitespace error introduced with 7a6a575887

Signed-off-by: Jo-Philipp Wich <jow@openwrt.org>

net/mosquitto/Makefile

@@ -149,7 +149,7 @@ define Package/$(PKG_NAME)/install
 	$(INSTALL_DIR) $(1)/usr/sbin
 	$(INSTALL_BIN) $(PKG_BUILD_DIR)/src/mosquitto $(1)/usr/sbin/mosquitto
 ifeq ($(CONFIG_MOSQUITTO_PASSWD),y)
-        $(INSTALL_BIN) $(PKG_BUILD_DIR)/src/mosquitto_passwd $(1)/usr/sbin
+	$(INSTALL_BIN) $(PKG_BUILD_DIR)/src/mosquitto_passwd $(1)/usr/sbin
 endif
 	$(INSTALL_DIR) $(1)/etc/mosquitto
 	$(INSTALL_CONF) $(PKG_BUILD_DIR)/mosquitto.conf $(1)/etc/mosquitto/mosquitto.conf