Glue for when ghost smashed mug (6,3)

I believe the answer is:

spirit gum

'glue' is the definition.
(spirit gum is a kind of glue)

'ghost smashed mug' is the wordplay.
'ghost' becomes 'spirit' (I've seen this in another clue).
'smashed' is an anagram indicator.
'mug' with letters rearranged gives 'gum'.
'spirit'+'gum'='SPIRIT GUM'

'for when' acts as a link.

(Another definition for spirit gum that I've seen is " Quick-drying adhesive".)

I've seen this clue in The Daily Express.

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