Fix 1 occurrence of inline-unnecessary-define

This variable is returned immediately and can be inlined.

Author: resyntax-ci[bot]

typed-racket-lib/typed-racket/static-contracts/combinators/exist.rkt

@@ -29,12 +29,10 @@
    (define (sc->contract v f)
      (match-define (exist-combinator (list names doms rngs)) v)
      (parameterize ([static-contract-may-contain-free-ids? #t])
-       (define a
-         (with-syntax ([doms-stx (f doms)]
-                       [rngs-stx (f rngs)]
-                       [n (car names)])
-           #'(->i ([n doms-stx]) (_ (n) rngs-stx))))
-       a))
+       (with-syntax ([doms-stx (f doms)]
+                     [rngs-stx (f rngs)]
+                     [n (car names)])
+         #'(->i ([n doms-stx]) (_ (n) rngs-stx)))))
    (define (sc->constraints v f)
      (simple-contract-restrict 'flat))])