linux: fix compiler warning

If the loop above completes at least one iteration, `i' will be larger
than zero.

* linux/dev/glue/block.c (rdwr_full): Add assertion to appease the
compiler.

1 files changed, 1 insertions, 0 deletions

diff --git a/linux/dev/glue/block.c b/linux/dev/glue/block.c
index 79a3646..da4ef38 100644
--- a/linux/dev/glue/block.c
+++ b/linux/dev/glue/block.c
@@ -624,6 +624,7 @@ rdwr_full (int rw, kdev_t dev, loff_t *off, char **buf, int *resid, int bshift)
     }
   if (! err)
     {
+      assert (i > 0);
       ll_rw_block (rw, i, bhp, 0);
       wait_on_buffer (bhp[i - 1]);
     }