[OE-core] [pyro][PATCH] wic: fix calculation of partition number

[Ed Bartosh]

Total number of partitions should be taken into account when calculating
real partition number for msdos partition table. The number can be
different for the 4th partition: it can be 4 if there are 4 partitions in
the table and 5 if there are more than 4 partitions in the table. In the
latter case number 4 is occupied by extended partition.

[YOCTO #11790]

Signed-off-by: Ed Bartosh <ed.bartosh at linux.intel.com>
---
 scripts/lib/wic/plugins/imager/direct.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/scripts/lib/wic/plugins/imager/direct.py b/scripts/lib/wic/plugins/imager/direct.py
index f2e6127..31d07ba 100644
--- a/scripts/lib/wic/plugins/imager/direct.py
+++ b/scripts/lib/wic/plugins/imager/direct.py
@@ -312,7 +312,7 @@ class PartitionedImage():
                 part.realnum = 0
             else:
                 realnum += 1
-                if self.ptable_format == 'msdos' and realnum > 3:
+                if self.ptable_format == 'msdos' and realnum > 3 and len(partitions) > 4:
                     part.realnum = realnum + 1
                     continue
                 part.realnum = realnum
-- 
2.1.4