[2687] Handle initial empty revision

[Robert Millan]

Revision: 2687
          http://svn.sv.gnu.org/viewvc/?view=rev&root=grub&revision=2687
Author:   robertmh
Date:     2009-11-07 14:07:14 +0000 (Sat, 07 Nov 2009)
Log Message:
-----------
Handle initial empty revision

Modified Paths:
--------------
    people/robertmh/svn2bzr/process_commit

Modified: people/robertmh/svn2bzr/process_commit
===================================================================
--- people/robertmh/svn2bzr/process_commit      2009-11-07 13:52:40 UTC (rev 
2686)
+++ people/robertmh/svn2bzr/process_commit      2009-11-07 14:07:14 UTC (rev 
2687)
@@ -61,7 +61,12 @@
 Exporting complete source tree for r${revision} ...
 EOF
   svn export -r ${revision} ${url} ${tmpdir}/export > /dev/null
-  cp -a ${tmpdir}/export/* ./
+  if [ "`ls ${tmpdir}/export`" == "" ] ; then
+    echo "Nothing to be found, skipping r${revision}" >&2
+    exit 0
+  else
+    cp -a ${tmpdir}/export/* ./
+  fi
 fi
 
 # This excludes zero-size files, but I can't think of a better way