Don't fail when trying to replace unallocated space.

src/modules/partition/core/PartitionActions.cpp

@@ -201,10 +201,23 @@ void
 doReplacePartition( PartitionCoreModule* core, Device* dev, Partition* partition )
 {
     cDebug() << "doReplacePartition for device" << partition->partitionPath();
+
     PartitionRole newRoles( partition->roles() );
     if ( partition->roles().has( PartitionRole::Extended ) )
         newRoles = PartitionRole( PartitionRole::Primary );
 
+    if ( partition->roles().has( PartitionRole::Unallocated ) )
+    {
+        newRoles = PartitionRole( PartitionRole::Primary );
+        cDebug() << "WARNING: selected partition is free space";
+        if ( partition->parent() )
+        {
+            Partition* parent = dynamic_cast< Partition* >( partition->parent() );
+            if ( parent && parent->roles().has( PartitionRole::Extended ) )
+                newRoles = PartitionRole( PartitionRole::Logical );
+        }
+    }
+
     Partition* newPartition = KPMHelpers::createNewPartition(
                                   partition->parent(),
                                   *dev,
@@ -215,7 +228,8 @@ doReplacePartition( PartitionCoreModule* core, Device* dev, Partition* partition
     PartitionInfo::setMountPoint( newPartition, "/" );
     PartitionInfo::setFormat( newPartition, true );
 
-    core->deletePartition( dev, partition );
+    if ( !partition->roles().has( PartitionRole::Unallocated ) )
+        core->deletePartition( dev, partition );
     core->createPartition( dev, newPartition );
 
     core->dumpQueue();