[gimp/gimp-2-8] metadata: fix length passed to base64 decoder (cherry picked from commit a4cd8637af7e29a3b78fda6034a

[Mikael Magnusson <mikachu src gnome org>]

commit 9eb45ed8d7a58c345ac8e1027901787e58d32ae5
Author: Mikael Magnusson <mikachu src gnome org>
Date:   Wed Jun 13 02:12:27 2012 +0200

    metadata: fix length passed to base64 decoder
    (cherry picked from commit a4cd8637af7e29a3b78fda6034aa1889df050540)

 plug-ins/metadata/xmp-parse.c |    5 ++---
 1 files changed, 2 insertions(+), 3 deletions(-)
---
diff --git a/plug-ins/metadata/xmp-parse.c b/plug-ins/metadata/xmp-parse.c
index 143b0a1..874ccc3 100644
--- a/plug-ins/metadata/xmp-parse.c
+++ b/plug-ins/metadata/xmp-parse.c
@@ -1064,7 +1064,7 @@ text_handler           (GMarkupParseContext  *markup_context,
 
     case STATE_INSIDE_ALT_LI_RSC_IMG:
       {
-        size_t  len, max_size;
+        size_t  max_size;
         guchar *decoded;
         gint    decoded_size;
         gint    state;
@@ -1073,8 +1073,7 @@ text_handler           (GMarkupParseContext  *markup_context,
 #ifdef DEBUG_XMP_PARSER
         /* g_print ("XMP: Pushing text:\n%s\n", text); */
 #endif
-        len = text_len - text_len;
-        max_size = (len / 4) * 3 + 3;
+        max_size = (text_len / 4) * 3 + 3;
         decoded = g_malloc (max_size);
 
         state = 0;