[geary] Prevent positioned elems in HTML mail escaping body: Closes bgo#724270

[Jim Nelson <jnelson src gnome org>]

commit 0ce906830784fd68b94550d4ed370f80185af4ea
Author: Robert Schroll <rschroll gmail com>
Date:   Thu Feb 13 15:01:17 2014 -0800

    Prevent positioned elems in HTML mail escaping body: Closes bgo#724270

 theming/message-viewer.css |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)
---
diff --git a/theming/message-viewer.css b/theming/message-viewer.css
index 38ab886..5fe5f4c 100644
--- a/theming/message-viewer.css
+++ b/theming/message-viewer.css
@@ -194,6 +194,7 @@ body:not(.nohide) .email.hide .header_container .avatar {
     padding-top: 16px;
     overflow-x: auto;
     overflow-y: hidden;
+    position: relative;  /* in case anything inside is positioned */
 }
 
 .email .remote_images {