[gmime] Update README.md

[Jeffrey Stedfast <fejj src gnome org>]

commit 45b9d96fb7ca2ccc214f2b4beaea798ad4724f5e
Author: Jeffrey Stedfast <jestedfa microsoft com>
Date:   Sun Mar 5 08:21:07 2017 -0500

    Update README.md

 README.md |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/README.md b/README.md
index 1d92ebc..a965c0b 100644
--- a/README.md
+++ b/README.md
@@ -208,10 +208,10 @@ while (g_mime_part_iter_next (iter)) {
     if (GMIME_IS_MULTIPART (parent) && GMIME_IS_PART (current)) {
         GMimePart *part = (GMimePart *) current;
 
-       if (g_mime_part_is_attachment (part)) {
+        if (g_mime_part_is_attachment (part)) {
             /* keep track of each attachment's parent multipart */
             g_ptr_array_append (multiparts, parent);
-           g_ptr_array_append (attachments, part);
+            g_ptr_array_append (attachments, part);
         }
     }
 }