[clang] [NFC][analyzer] Spread use of 'Expr*' instead of 'Stmt*' (PR #188319)

[Balázs Benics via cfe-commits]

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@@ -278,9 +278,9 @@ class ProgramState : public llvm::FoldingSetNode {
   // Binding and retrieving values to/from the environment and symbolic store.
   //==---------------------------------------------------------------------==//
 
-  /// Create a new state by binding the value 'V' to the statement 'S' in the
+  /// Create a new state by binding the value 'V' to the expression 'E' in the
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steakhal wrote:

```suggestion
  /// Create a new state by binding the value \p V to the expression \p E in the
```

https://github.com/llvm/llvm-project/pull/188319