Add a sanity check - if any values were not returned from the node

select, skip it (otherwise, we can end up with a malformed exports
file.)

tbsetup/exports_setup.in

@@ -185,6 +185,16 @@ while (@row = $nodes_result->fetchrow_array) {
     my %fslist = ();
     my @dirlist = ();
 
+    #
+    # Sanity check - don't try this if any of the above are not defined - we
+    # may end up with a bad line in exports
+    #
+    if ((!defined($node_id)) || (!defined($pid)) || (!defined($eid)) ||
+        (!defined($gid)) || (!defined($ip))) {
+        print "WARNING: exports_setup: Skipping database row with undefined values\n";
+	next;
+    }
+
     #
     # Construct a list of directories accessible from this node.
     # First the project and group directories.