updated for version 7.3.645
Problem:    No tests for patch 7.3.625 and 7.3.637.
Solution:   Add more tests for the "gn" command and try/catch. (Christian
            Brabandt)
diff --git a/src/testdir/test55.ok b/src/testdir/test55.ok
index fde085c..7375007 100644
--- a/src/testdir/test55.ok
+++ b/src/testdir/test55.ok
@@ -115,3 +115,9 @@
 {'a': {'b': 'B'}}
 Vim(call):E737: a
 {'a': {'b': 'B'}}
+Vim(foldopen):E490:
+
+
+Error detected while processing :
+E492: Not an editor command: foobar|catch|let a = matchstr(v:exception,'^[^ ]*')|endtry
+