Fixed poll() issue with QNX

mongoose.c

@@ -5014,7 +5014,11 @@ static void *master_thread(void *thread_func_param) {
 
     if (poll(pfd, ctx->num_listening_sockets, 200) > 0) {
       for (i = 0; i < ctx->num_listening_sockets; i++) {
-        if (ctx->stop_flag == 0 && pfd[i].revents == POLLIN) {
+        // NOTE(lsm): on QNX, poll() returns POLLRDNORM after the
+        // successfull poll, and POLLIN is defined as (POLLRDNORM | POLLRDBAND)
+        // Therefore, we're checking pfd[i].revents & POLLIN, not
+        // pfd[i].revents == POLLIN.
+        if (ctx->stop_flag == 0 && (pfd[i].revents & POLLIN)) {
           accept_new_connection(&ctx->listening_sockets[i], ctx);
         }
       }