Cleanup

Author: hoodmane

src/library_fs.js

@@ -939,7 +939,7 @@ FS.staticInit();
       return node.node_ops.getattr(node);
     },
     fstat(fd) {
-      var stream = SYSCALLS.getStreamFromFD(fd);
+      var stream = FS.getStreamChecked(fd);
       return stream.node.node_ops.getattr(stream.node);
     },
     lstat(path) {

src/library_noderawfs.js

@@ -80,7 +80,7 @@ addToLibrary({
       return stat;
     },
     fstat(fd) {
-      var stream = SYSCALLS.getStreamFromFD(fd);
+      var stream = FS.getStreamChecked(fd);
       return fs.fstatSync(stream.nfd);
     },
     chmod(path, mode, dontFollow) {