[gimp] file-bmp: Rewrite code

[Mukund Sivaraman <muks src gnome org>]

commit a713175375ab3ee08eda59c3851e20f0b6da13a4
Author: Mukund Sivaraman <muks banu com>
Date:   Sun May 8 22:10:20 2011 +0530

    file-bmp: Rewrite code

 plug-ins/file-bmp/bmp-write.c |    6 ++++--
 1 files changed, 4 insertions(+), 2 deletions(-)
---
diff --git a/plug-ins/file-bmp/bmp-write.c b/plug-ins/file-bmp/bmp-write.c
index 63d0f0c..f45554a 100644
--- a/plug-ins/file-bmp/bmp-write.c
+++ b/plug-ins/file-bmp/bmp-write.c
@@ -344,8 +344,10 @@ WriteBMP (const gchar  *filename,
 
   if (BMPSaveData.encoded == 0)
   {
-    if (!mask_info_size) Bitmap_Head.biCompr = 0;
-    else Bitmap_Head.biCompr = 3;
+    if (mask_info_size > 0)
+      Bitmap_Head.biCompr = 3; /* BI_BITFIELDS */
+    else
+      Bitmap_Head.biCompr = 0; /* BI_RGB */
   }
   else if (BitsPerPixel == 8)
     Bitmap_Head.biCompr = 1;