package/libmicrohttpd: bump to version 0.9.70

Bugfix release. For details, see the release notes:
https://lists.gnu.org/archive/html/libmicrohttpd/2020-02/msg00006.html

Signed-off-by: Gilles Talis <gilles.talis@gmail.com>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

package/libmicrohttpd/libmicrohttpd.hash

@@ -1,3 +1,3 @@
 # Locally calculated
-sha256 fb9b6b148b787493e637d3083588711e65cbcb726fa02cee2cd543c5de27e37e  libmicrohttpd-0.9.69.tar.gz
+sha256 90d0a3d396f96f9bc41eb0f7e8187796049285fabef82604acd4879590977307  libmicrohttpd-0.9.70.tar.gz
 sha256 7399547209438c93f9b90297954698773d4846cea44cde5ca982c84c45952a3b  COPYING

package/libmicrohttpd/libmicrohttpd.mk

@@ -4,7 +4,7 @@
 #
 ################################################################################
 
-LIBMICROHTTPD_VERSION = 0.9.69
+LIBMICROHTTPD_VERSION = 0.9.70
 LIBMICROHTTPD_SITE = $(BR2_GNU_MIRROR)/libmicrohttpd
 LIBMICROHTTPD_LICENSE_FILES = COPYING
 LIBMICROHTTPD_INSTALL_STAGING = YES