Fix #1292 - allow requests with missing protocol version, responses with no reason fields

src/http.c

@@ -209,8 +209,8 @@ int mg_http_parse(const char *s, size_t len, struct mg_http_message *hm) {
   s = skip(s, end, " ", &hm->uri);
   s = skip(s, end, "\r\n", &hm->proto);
 
-  // Sanity check
-  if (hm->method.len == 0 || hm->uri.len == 0 || hm->proto.len == 0) return -1;
+  // Sanity check. Allow protocol/reason to be empty
+  if (hm->method.len == 0 || hm->uri.len == 0) return -1;
 
   // If URI contains '?' character, setup query string
   if ((qs = (const char *) memchr(hm->uri.ptr, '?', hm->uri.len)) != NULL) {