add missing 'break' in switch statement

Coverity points out that abis_nm_rcvmsg_sw() contains a switch
statement with suspicious looking missing break statements.

It is unclear to me if the code intends to process some
types of messages in more than one state, or of all messages
which affect a particular state already appear in the state's
corresponding switch block.

Can someone else tell what is supposed to happen here?

If this code is falling through intentionally, I will suggest
a patch adding /* fallthrough */ comments for clarity.

Change-Id: I1ea4221fadf30074156e9d17d94a5cb065242584
Related: CID#57703
Related: CID#57704
1 file changed