[pan2: 20/68] Make ArticleCache::get_message const.

[Petr Kovář <pmkovar src gnome org>]

commit b389830ab1bc64c67e2d92f2f080811edef232ef
Author: K. Haley <haleykd users sf net>
Date:   Tue Mar 23 15:13:19 2010 -0600

    Make ArticleCache::get_message const.
    
    This function doesn't affect the cache state so we should be able to get the message body from a const&.

 pan/data/article-cache.cc |    2 +-
 pan/data/article-cache.h  |    2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/pan/data/article-cache.cc b/pan/data/article-cache.cc
index b4f9a94..d7a211f 100644
--- a/pan/data/article-cache.cc
+++ b/pan/data/article-cache.cc
@@ -398,7 +398,7 @@ ArticleCache :: get_message_mem_stream (const Quark& mid) const
 }
 
 GMimeMessage*
-ArticleCache :: get_message (const mid_sequence_t& mids)
+ArticleCache :: get_message (const mid_sequence_t& mids) const
 {
    debug ("trying to get a message with " << mids.size() << " parts");
    GMimeMessage * retval = NULL;
diff --git a/pan/data/article-cache.h b/pan/data/article-cache.h
index a292528..01d5a2c 100644
--- a/pan/data/article-cache.h
+++ b/pan/data/article-cache.h
@@ -70,7 +70,7 @@ namespace pan
       void resize ();
       void clear ();
 
-      GMimeMessage* get_message (const mid_sequence_t&);
+      GMimeMessage* get_message (const mid_sequence_t&) const;
 
       typedef std::vector<std::string> strings_t;
       strings_t get_filenames (const mid_sequence_t&);