minor fix for make_spend function

[trepca]

raise error when passing wrong type to make_spend to avoid ambiguous UnboundLocalError exception

[coveralls-official]

Pull Request Test Coverage Report for Build 9456404985

Warning: This coverage report may be inaccurate.

This pull request's base commit is no longer the HEAD commit of its target branch. This means it includes changes from outside the original pull request, including, potentially, unrelated coverage changes.

• For more information on this, see Tracking coverage changes with pull request builds.
• To avoid this issue with future PRs, see these Recommended CI Configurations.
• For a quick fix, rebase this PR at GitHub. Your next report should be accurate.

Details

• 0 of 2 (0.0%) changed or added relevant lines in 1 file are covered.
• 27 unchanged lines in 11 files lost coverage.
• Overall coverage decreased (-0.02%) to 90.883%

---

Changes Missing Coverage	Covered Lines	Changed/Added Lines	%
chia/types/coin_spend.py	0	2	0.0%

Files with Coverage Reduction	New Missed Lines	%
chia/daemon/keychain_proxy.py	1	72.57%
chia/farmer/farmer.py	1	72.23%
chia/wallet/wallet_node.py	1	89.01%
chia/_tests/core/full_node/test_transactions.py	1	99.11%
chia/daemon/client.py	1	73.33%
chia/timelord/timelord.py	2	73.67%
chia/data_layer/data_layer.py	2	85.32%
chia/full_node/full_node.py	3	85.96%
chia/_tests/core/util/test_lockfile.py	4	88.26%
chia/server/server.py	4	81.46%

Totals
Change from base Build 9432246969:	-0.02%
Covered Lines:	99973
Relevant Lines:	109941

---

💛 - Coveralls

[arvidn]

coverage:

chia/types/coin_spend.py (0.0%): Missing lines 34,40