Fixing invalid asm.js in asm-wasm-literals.js

This was previously undetected due to a now fixed typing bug.

BUG= https://bugs.chromium.org/p/v8/issues/detail?id=4203
TEST=test-asm-validator,asm-wasm
TBR=titzer@chromium.org
LOG=N
NOTRY=true

Review URL: https://codereview.chromium.org/1823333005

Cr-Commit-Position: refs/heads/master@{#35048}

test/mjsunit/wasm/asm-wasm-literals.js

@@ -109,23 +109,23 @@ function LargeUnsignedLiterals() {
   "use asm";
   function a() {
     var x = 2147483648;
-    return +x;
+    return +(x >>> 0);
   }
   function b() {
     var x = 2147483649;
-    return +x;
+    return +(x >>> 0);
   }
   function c() {
     var x = 0x80000000;
-    return +x;
+    return +(x >>> 0);
   }
   function d() {
     var x = 0x80000001;
-    return +x;
+    return +(x >>> 0);
   }
   function e() {
     var x = 0xffffffff;
-    return +x;
+    return +(x >>> 0);
   }
   return {a: a, b: b, c: c, d: d, e: e};
 }