[file-roller] rar: use a more solid way to get the version number

[Paolo Bacchilega <paobac src gnome org>]

commit 1427ba9245e8e8de8584b4022a2bdbc2e69a7619
Author: Paolo Bacchilega <paobac src gnome org>
Date:   Mon Sep 9 10:22:53 2013 +0200

    rar: use a more solid way to get the version number
    
    parse the version number directly

 src/fr-command-rar.c |    7 ++++---
 1 files changed, 4 insertions(+), 3 deletions(-)
---
diff --git a/src/fr-command-rar.c b/src/fr-command-rar.c
index 2bb06bf..e15e1af 100644
--- a/src/fr-command-rar.c
+++ b/src/fr-command-rar.c
@@ -174,9 +174,10 @@ process_line (char     *line,
        g_return_if_fail (line != NULL);
 
        if (! rar_comm->list_started) {
-               if (strncmp (line, "Details:", 8) == 0) {
-                       rar_comm->rar5 = TRUE;
-                       return;
+               if (strncmp (line, "RAR ", 4) == 0) {
+                       int version;
+                       sscanf (line, "RAR %d.", &version);
+                       rar_comm->rar5 = (version >= 5);
                }
                else if (strncmp (line, "--------", 8) == 0) {
                        rar_comm->list_started = TRUE;