[vte] Handle destroying NULL termcap

[Behdad Esfahbod <behdad src gnome org>]

commit 7556c58a6f21f846b97351ee2002e0b1d9236824
Author: Behdad Esfahbod <behdad behdad org>
Date:   Mon Nov 9 18:55:16 2009 -0500

    Handle destroying NULL termcap

 src/vtetc.c |    3 ++-
 1 files changed, 2 insertions(+), 1 deletions(-)
---
diff --git a/src/vtetc.c b/src/vtetc.c
index fe43550..df0b527 100644
--- a/src/vtetc.c
+++ b/src/vtetc.c
@@ -478,7 +478,6 @@ _vte_termcap_create (const char *filename)
   int length;
 
   file = g_mapped_file_new (filename, FALSE, NULL);
-  
   if (file == NULL)
     return NULL;
 
@@ -496,6 +495,8 @@ _vte_termcap_create (const char *filename)
 static void
 _vte_termcap_destroy (VteTermcap *termcap)
 {
+  if (!termcap)
+    return;
   g_tree_destroy (termcap->tree);
   g_mapped_file_free (termcap->file);
   g_slice_free (VteTermcap, termcap);