[gparted] Set default partition alignment to cylinder for amiga partition table (#116)

[Mike Fleetwood <mfleetwo src gnome org>]

commit cca15b4c9f26c23b0af817c34a67bfade47b5c15
Author: Curtis Gedak <gedakc gmail com>
Date:   Fri Nov 13 10:58:14 2020 -0700

    Set default partition alignment to cylinder for amiga partition table (#116)
    
    Closes #116 - Fails to create partitions on disks with Amiga partition
                  tables using default settings

 src/Dialog_Base_Partition.cc | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)
---
diff --git a/src/Dialog_Base_Partition.cc b/src/Dialog_Base_Partition.cc
index 19f1915e..25cc4d7c 100644
--- a/src/Dialog_Base_Partition.cc
+++ b/src/Dialog_Base_Partition.cc
@@ -116,7 +116,11 @@ Dialog_Base_Partition::Dialog_Base_Partition(const Device& device)
        /* TO TRANSLATORS: Option for combo box "Align to:" */
        combo_alignment.items().push_back(_("None"));
 
-       combo_alignment.set_active(ALIGN_MEBIBYTE);  // Default setting
+       // Default setting for partition table alignment
+       if (device.disktype == "amiga")
+               combo_alignment.set_active(ALIGN_CYLINDER);
+       else
+               combo_alignment.set_active(ALIGN_MEBIBYTE);
 
        grid_resize.attach(combo_alignment, 1, 3, 1, 1);