test: fix compile warnings about printf + size_t

test.c

@@ -1232,7 +1232,7 @@ test_no_overflow_long_body (int req, size_t length)
   size_t parsed;
   size_t i;
   char buf1[3000];
-  size_t buf1len = sprintf(buf1, "%s\r\nConnection: Keep-Alive\r\nContent-Length: %ld\r\n\r\n",
+  size_t buf1len = sprintf(buf1, "%s\r\nConnection: Keep-Alive\r\nContent-Length: %zu\r\n\r\n",
       req ? "POST / HTTP/1.0" : "HTTP/1.0 200 OK", length);
   parsed = http_parser_execute(&parser, &settings_null, buf1, buf1len);
   if (parsed != buf1len)
@@ -1251,7 +1251,7 @@ test_no_overflow_long_body (int req, size_t length)
 
  err:
   fprintf(stderr,
-          "\n*** error in test_no_overflow_long_body %s of length %ld ***\n",
+          "\n*** error in test_no_overflow_long_body %s of length %zu ***\n",
           req ? "REQUEST" : "RESPONSE",
           length);
   exit(1);