core: brick process is getting SIGSEGV during inode_unref #4302
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The brick process is getting crashed due to stack overflow while unref namespace inode, the ns inode
was introduced by the patch ((#1763)
Solution: __inode_destroy is calling inode_unref that is again calling inode_unref become a
recursive call and eventually a brick process is getting crashed. To avoid a crash for namespace
inode call only __inode_ref.
Fixes: #4295
Change-Id: If5deb06b726a5e7dfedd2784bddcef81e6e5d7d9