#2947 imm: osafimmnd coredump is generated during sanity test

[Vu Minh Nguyen]

The coredump is generated in the context of processing the message type "IMMND_EVT_D2ND_IMPLDELETE". The backtrace is attached.

[Vu Minh Nguyen]

https://sourceforge.net/p/opensaf/mailman/message/36453276/

[Vu Minh Nguyen]

commit 3ace4a29e982bbfa1f81adbacc22702d6fb990ab (HEAD -> develop, origin/develop, ticket-2947)
Author: Vu Minh Nguyen vu.m.nguyen@dektech.com.au
Date: Tue Oct 30 16:15:17 2018 +0700

imm: fix osafimmnd coredump genereted during sanity test [#2947]

The coredump is generated in the context of processing the message type
"IMMND_EVT_D2ND_IMPLDELETE" because the memory is corrupted at the time
of decoding that message.

It allocated 'size' bytes of memory with the boundary in range [0 - 'size - 1'],
but modified - added null terminated, the memory at the index of `size` which
was out of that range.

This patch fixes such issue. The memory should be allocated with `size + 1`
bytes in length.