streams: remove unnecessary check

Signed-off-by: Antoine du Hamel <[email protected]>

Author: aduh95

lib/internal/webstreams/util.js

@@ -151,13 +151,13 @@ function peekQueueValue(controller) {
 function enqueueValueWithSize(controller, value, size) {
   assert(controller[kState].queue !== undefined);
   assert(controller[kState].queueTotalSize !== undefined);
-  size = +size;
-  if (typeof size !== 'number' ||
-      size < 0 ||
-      NumberIsNaN(size) ||
-      size === Infinity) {
+  const coercedSize = +size;
+  if (NumberIsNaN(coercedSize) ||
+      coercedSize < 0 ||
+      coercedSize === Infinity) {
     throw new ERR_INVALID_ARG_VALUE.RangeError('size', size);
   }
+  size = coercedSize;
   ArrayPrototypePush(controller[kState].queue, { value, size });
   controller[kState].queueTotalSize += size;
 }