Fix leak in link_in()
Fix leak in link_in()

ssarangi/llvmlite,markdewing/llvmlite,ssarangi/llvmlite,m-labs/llvmlite,pitrou/llvmlite,m-labs/llvmlite,markdewing/llvmlite,ssarangi/llvmlite,ssarangi/llvmlite,squisher/llvmlite,squisher/llvmlite,pitrou/llvmlite,squisher/llvmlite,pitrou/llvmlite,m-labs/llvmlite,numba/llvmlite,pitrou/llvmlite,sklam/llvmlite,numba/llvmlite,sklam/llvmlite,m-labs/llvmlite,numba/llvmlite,markdewing/llvmlite,markdewing/llvmlite,squisher/llvmlite,numba/llvmlite,sklam/llvmlite,sklam/llvmlite