[1.7 / 1.7.1] "eCard" sends random image

[V@no]

This bug only shows after applying [1.7/1.7.1] GET requests override POST requests fix.

In postcards.php find two times:

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1	"lang_sender" => $lang['sender'],

Insert ^above each intance:

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1	"image_id" => $image_id,