avfilter/f_interleave: no need to check for inlink eof if non-empty queue

Also set state to ready if there is any inlink with queued frame.

libavfilter/f_interleave.c

@@ -70,11 +70,9 @@ static int activate(AVFilterContext *ctx)
     FF_FILTER_FORWARD_STATUS_BACK_ALL(outlink, ctx);
 
     for (i = 0; i < ctx->nb_inputs; i++) {
-        if (!ff_outlink_get_status(ctx->inputs[i])) {
+        if (!ff_inlink_queued_frames(ctx->inputs[i]))
-            if (!ff_inlink_queued_frames(ctx->inputs[i]))
+            continue;
-                break;
+        nb_inputs_with_frames++;
-            nb_inputs_with_frames++;
-        }
     }
 
     if (nb_inputs_with_frames > 0) {
@@ -137,6 +135,11 @@ static int activate(AVFilterContext *ctx)
         }
     }
 
+    if (i) {
+        ff_filter_set_ready(ctx, 100);
+        return 0;
+    }
+
     return FFERROR_NOT_READY;
 }