tests: remove leading spaces from some tags

The threee tags `<name>`, `</name>` and `<command>` were frequently used
with a leading space that this removes. The reason this habbit is so

tests: remove leading spaces from some tags

The threee tags `<name>`, `</name>` and `<command>` were frequently used
with a leading space that this removes. The reason this habbit is so
widespread in testcases is probably that they have been copy and pasted.

Hence, fixing them all now might curb this practice from now on.

Closes #12028

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tool_operate: more transfer cleanup after parallel transfer fail

In some circumstances when doing parallel transfers, the
single_transfer_cleanup() would not be called and then 'inglob'

tool_operate: more transfer cleanup after parallel transfer fail

In some circumstances when doing parallel transfers, the
single_transfer_cleanup() would not be called and then 'inglob' could
leak.

Test 496 verifies

Reported-by: Trail of Bits
Closes #9749

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