Fix the following Coverity issues:
CID 61230 (Unchecked return value)
CID 56101 (Uninitialized scalar field)
CID 55010, 55005 (Dereference after null check)
CID 55004 (Explicit null dereferenced)
CID 54807 (Same on both sides)
CID 48060 (Dereference null return value)