libmicrohttpd: bump version

The old 0.4.2 version doesn't seem to be available on the GNU mirrors
anymore, so change to the slightly-less-ancient 0.4.6 version.

We're not moving to the new 0.9.x series yet, as that one needs an
external libgnutls for https support, which we don't have a BR
package for yet.

Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>

package/libmicrohttpd/libmicrohttpd.mk

@@ -3,9 +3,9 @@
 # libmicrohttpd
 #
 #############################################################
-LIBMICROHTTPD_VERSION:=0.4.2
-LIBMICROHTTPD_SOURCE:=libmicrohttpd-$(LIBMICROHTTPD_VERSION).tar.gz
-LIBMICROHTTPD_SITE:=$(BR2_GNU_MIRROR)/libmicrohttpd
+LIBMICROHTTPD_VERSION = 0.4.6
+LIBMICROHTTPD_SOURCE = libmicrohttpd-$(LIBMICROHTTPD_VERSION).tar.gz
+LIBMICROHTTPD_SITE = $(BR2_GNU_MIRROR)/libmicrohttpd
 LIBMICROHTTPD_INSTALL_STAGING = YES
 
 ifeq ($(BR2_PACKAGE_LIBMICROHTTPD_SSL),y)