Fix some "ISO C90 forbids mixed declarations and code" warnings

src/or/directory.c

@@ -1418,10 +1418,10 @@ parse_http_url(const char *headers, char **url)
 
   /* Check if the header is well formed (next sequence
    * should be HTTP/1.X\r\n). Assumes we're supporting 1.0? */
-  char *e = (char *)eat_whitespace_no_nl(s);
   {
     unsigned minor_ver;
     char ch;
+    char *e = (char *)eat_whitespace_no_nl(s);
     if (2 != tor_sscanf(e, "HTTP/1.%u%c", &minor_ver, &ch)) {
       return -1;
     }

src/test/test_dir.c

@@ -2367,8 +2367,8 @@ test_dir_fmt_control_ns(void *arg)
 static void
 test_dir_http_handling(void *args)
 {
-  (void)args;
   char *url = NULL;
+  (void)args;
 
   /* Parse http url tests: */
   /* Good headers */