Pointless whitespace tidy.

examples/mysql_log/Makefile

@@ -11,5 +11,5 @@ mosquitto_mysql_log : mysql_log.o
 mysql_log.o : mysql_log.c
 	${CC} -c $^ -o $@ ${CFLAGS} -I../../lib
 
-clean : 
+clean :
 	-rm -f *.o mosquitto_mysql_log

examples/subscribe_simple/Makefile

@@ -25,5 +25,5 @@ multiple.o : multiple.c ../../lib/libmosquitto.so.${SOVERSION}
 ../../lib/libmosquitto.so.${SOVERSION} :
 	$(MAKE) -C ../../lib
 
-clean : 
+clean :
 	-rm -f *.o sub_single sub_multiple

examples/temperature_conversion/Makefile

@@ -14,5 +14,5 @@ main.o : main.cpp
 temperature_conversion.o : temperature_conversion.cpp
 	${CXX} -c $^ -o $@ ${CFLAGS}
 
-clean : 
+clean :
 	-rm -f *.o mqtt_temperature_conversion