fix(IOB): EOF in stdin works

src/io_backend/io_backend.c

@@ -85,7 +85,11 @@ ssize_t stream_read(char **stream)
         if (nread == -1)
         {
             state = IOB_STATE_FINISHED;
-            return 0;
+            // MAGNIFICO
+            // malloc(1);
+            *stream_buf = EOF;
+            *stream = stream_buf;
+            return 1;
         }
         else if (nread < 0)
             state = IOB_STATE_ERROR;