This patch avoids compilation problems on recet Trunk.


--- libmicrohttpd-0.9.52/src/microhttpd/response.c	2017-10-19 14:26:09.439917401 +0000
+++ libmicrohttpd-0.9.52/src/microhttpd/response.c	2017-10-19 14:24:00.542128079 +0000
@@ -576,8 +576,8 @@ MHD_create_response_from_data (size_t si
       must_free = MHD_YES;
       data = tmp;
     }
-  response->crc = NULL;
-  response->crfc = must_free ? &free : NULL;
+  response->crc = (MHD_ContentReaderCallback)NULL;
+  response->crfc = must_free ? &free : (MHD_ContentReaderFreeCallback)NULL;
   response->crc_cls = must_free ? data : NULL;
   response->reference_count = 1;
   response->total_size = size;