C++: Add change note.

MathiasVP · MathiasVP · commit 87925abaa25e · 2023-09-06T17:26:08.000+01:00
diff --git a/cpp/ql/lib/change-notes/2023-09-06-as-defining-argument-off-by-one-fix.md b/cpp/ql/lib/change-notes/2023-09-06-as-defining-argument-off-by-one-fix.md
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+---
+category: minorAnalysis
+---
+* The `DataFlow::asDefiningArgument` predicate now takes its argument from the range starting at `1` instead of `2`. Queries that depend on the single-parameter version of `DataFlow::asDefiningArgument` should have their arguments arguments accordingly.

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 +---
 +category: minorAnalysis
 +---
 +* The `DataFlow::asDefiningArgument` predicate now takes its argument from the range starting at `1` instead of `2`. Queries that depend on the single-parameter version of `DataFlow::asDefiningArgument` should have their arguments arguments accordingly.