[PATCH] patches: Show why updating the index failed.

[Francois Gouget]

Signed-off-by: Francois Gouget 
---
 patches/update | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/patches/update b/patches/update
index e45bad90..36f7cca8 100755
--- a/patches/update
+++ b/patches/update
@@ -477,4 +477,5 @@ foreach (keys %subdirs)
     !system "rsync", "-q", "-r", "--chmod=+r", "--include=$_*", "--exclude=*", "$dir/", "$dest/data/$_" or die "rsync failed: $?";
 }

-rename "$dest/index.html.new", "$dest/index.html" or die "failed to update index.html";
+rename "$dest/index.html.new", "$dest/index.html" or
+    die "failed to update index.html: $!";