S1AP_Emulation: initialize comp_ref member of S1apAssociationTable

The comp_ref member in S1apAssociationTable is not initialized. When an
item is delted from the S1apAssociationTable, comp_ref is set to null.
Let's maintain a consistent state and also set comp_ref to null when the
table is initialized.

Related: OS#5760
Change-Id: If86a18a4a953665c1e2bf7f757880ba3ac6c0f83
1 file changed