avoid dependence on the order of the fields in the timeval struct, pointed out

by Gisle Vanem

tests/libtest/lib503.c

@@ -40,7 +40,10 @@ CURLcode test(char *URL)
     while(!done) {
       fd_set rd, wr, exc;
       int max_fd;
-      struct timeval interval={1,0};
+      struct timeval interval;
+
+      interval.tv_sec = 1;
+      interval.tv_usec = 0;
 
       while (res == CURLM_CALL_MULTI_PERFORM) {
         res = curl_multi_perform(m, &running);

tests/libtest/lib504.c

@@ -39,7 +39,10 @@ CURLcode test(char *URL)
   if(res && (res != CURLM_CALL_MULTI_PERFORM))
     return 1; /* major failure */
   do {
-    struct timeval interval={1,0};
+    struct timeval interval;
+
+    interval.tv_sec = 1;
+    interval.tv_usec = 0;
 
     fprintf(stderr, "curl_multi_perform()\n");