efl net proxy helper - use infinite for and sleeps instead of pause

so the process was waiting to be killed (waiting forever) and i used
pause() but this isnt windows-friendly, so since this process expects
to be killed by the parent process, then use a for (;;) with lon long
long sleeps... instead.

this shoud fix T5174

src/bin/ecore_con/efl_net_proxy_helper.c

@@ -257,7 +257,7 @@ main(int argc EINA_UNUSED, char **argv EINA_UNUSED)
         // Failed to init libproxy so report this before exit
         fprintf(stdout, "F\n");
         fflush(stdout);
-        pause();
+        for (;;) sleep(60 * 60 * 24);
      }
    eina_shutdown();
    return 0;