Seeing film end sloppily, discreetly fixes it (5)

I believe the answer is:

mends

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'discreetly fixes it' is the definition.
I can't judge whether this definition defines the answer.

'seeing film end sloppily' is the wordplay.
'seeing film' becomes 'M' (s93s Fritz Lang film).
'sloppily' becomes 's' (this might be a standard abbreviation of which I'm unaware).
'm'+'end'+'s'='MENDS'

Can you help me to learn more?

(Other definitions for mends that I've seen before include "Fixes" , "Repairs, darns" .)

I've seen this clue in The Irish Times.

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