Well probably we could find several other questions about indefinite intergral closed as a duplicate of definite integral. But reopening and reclosing is probably too much fuss.
Probably the best thing to do is to leave a comment linking to question about indefinite integral at such questions.
@MartinSleziak Since all the indefinite integral questions are merged (example), there's already a link to the question we reopened. So, we probably don't have to worry about them.