LSQR allocate buffer data does not work with SIRF objects

[paskino]

Description

CIL/Wrappers/Python/cil/optimisation/algorithms/LSQR.py

Lines 129 to 130 in 3065ebd

	self.tmp_range = data.geometry.allocate(None) #2 range
	self.tmp_domain = self.x.geometry.allocate(None) #4 domain

A SIRF data container does not have a member geometry therefore these lines will fail. However, the same buffer can be allocated by getting the domain and range of the operator

Environment

import cil, sys
print(cil.version.version, cil.version.commit_hash, sys.version, sys.platform)