setting remoteDpc to getIncomingOpc() instead of getIncomingDpc()

[sgurivir]

RepoIQ (http://repoiq.ai) has identified a potential logical issue in SccpConnectionBaseImpl.java

Potential issue in receiveMessage in sccp/sccp-impl/src/main/java/org/restcomm/protocols/ss7/sccp/impl/SccpConnectionBaseImpl.java

https://github.com/RestComm/jss7/blob/master/sccp/sccp-impl/src/main/java/org/restcomm/protocols/ss7/sccp/impl/SccpConnectionBaseImpl.java#L94

Logic error: setting remoteDpc to getIncomingOpc() instead of getIncomingDpc()

Impact: Incorrect remote destination point code assignment which could cause message routing failures in SS7 communication

Potential Solution: Change line 94 to: remoteDpc = cc.getIncomingDpc();