[evolution] Fix a potential uninitialized argument in e_signature_list_find().

[Matthew Barnes <mbarnes src gnome org>]

commit 30c7ead06032ec0b6945e9f03db01f50645bf621
Author: Matthew Barnes <mbarnes redhat com>
Date:   Fri Jan 15 21:55:59 2010 -0500

    Fix a potential uninitialized argument in e_signature_list_find().
    
    Caught by the Clang Static Analyzer.

 e-util/e-signature-list.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/e-util/e-signature-list.c b/e-util/e-signature-list.c
index 5fd33e2..61076b9 100644
--- a/e-util/e-signature-list.c
+++ b/e-util/e-signature-list.c
@@ -439,7 +439,7 @@ e_signature_list_find (ESignatureList *signatures,
 	for (it = e_list_get_iterator ((EList *) signatures);
 	     e_iterator_is_valid (it);
 	     e_iterator_next (it)) {
-		const gchar *value;
+		const gchar *value = NULL;
 
 		/* XXX EIterator misuses const. */
 		signature = (ESignature *) e_iterator_get (it);