fix: Replace unwrap with ? in normalize()

[AndreaBozzo]

Replace .unwrap() with ? in normalize() for consistent error handling.

The normalize() function was the only public API function using .unwrap() on CString::new(), while all other functions (parse(), fingerprint(), scan(), etc.) use ? for proper error propagation.

Changes

• src/query.rs: Line 98 - CString::new(statement).unwrap() → CString::new(statement)?

[seanlinsley]

Good catch, thanks for fixing this

[AndreaBozzo]

@seanlinsley thanks to you for the very quick review/merge, have a nice week end