ecore_evas_wayland: Do not pass negative parameter to close function

Coverity reports that 'fd' here is negative, and close() cannot accept
a negative parameter, so add a check to make sure 'fd' is not negative
before passing to close function.

Fixes CID1420318

src/modules/ecore_evas/engines/wayland/ecore_evas_wayland_common.c

@@ -2624,7 +2624,7 @@ end:
         ecore_main_fd_handler_del(fd_handler);
         free(slice->slice.mem);
         free(slice);
-        close(fd);
+        if (fd > -1) close(fd);
         return EINA_FALSE;
      }
 }