correct the test

Author: Shourya742

tests/codegen/autodiff/inline.rs

@@ -11,7 +11,6 @@ fn square(x: &f64) -> f64 {
     x * x
 }
 
-
 // CHECK: ; inline::d_square
 // CHECK-NEXT: ; Function Attrs: alwaysinline
 // CHECK-NOT: noinline
@@ -21,4 +20,4 @@ fn main() {
     let mut dx1 = std::hint::black_box(1.0);
     let _ = d_square(&x, &mut dx1, 1.0);
     assert_eq!(dx1, 6.0);
-}
+}