The most common and most likely answer to this crossword clue is the 4 plus 3 plus 3 letter word HOME AND DRY
I've seen this crossword clue in Independent
H
O
M
E
A
N
D
D
R
Y
Buddy explains!
The straight part
We know that "Out of danger" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case out of danger = home and dry.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.