[gimp] Revert "Bug 683381 - Inverted alpha behavior of 16-bit Targa files"

[Michael Natterer <mitch src gnome org>]

commit a366fd76e53ae7a544a46a2cc6ed3e2d031682c8
Author: Michael Natterer <mitch gimp org>
Date:   Wed Sep 5 23:34:11 2012 +0200

    Revert "Bug 683381 - Inverted alpha behavior of 16-bit Targa files"
    
    This reverts commit dc00fb57a0e50a9231515aa473bccc1e449aed10.

 plug-ins/common/file-tga.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/plug-ins/common/file-tga.c b/plug-ins/common/file-tga.c
index a490b62..c1d05dd 100644
--- a/plug-ins/common/file-tga.c
+++ b/plug-ins/common/file-tga.c
@@ -812,7 +812,7 @@ upsample (guchar       *dest,
 
       if (alpha)
         {
-          dest[3] = (src[1] & 0x80) ? 255 : 0;
+          dest[3] = (src[1] & 0x80) ? 0 : 255;
           dest += 4;
         }
       else