[NaCl SDK] nacl_io: Change default root filesystem type from passthroughfs to memfs

native_client_sdk/src/libraries/nacl_io/kernel_wrap_newlib.cc

Index: native_client_sdk/src/libraries/nacl_io/kernel_wrap_newlib.cc
diff --git a/native_client_sdk/src/libraries/nacl_io/kernel_wrap_newlib.cc b/native_client_sdk/src/libraries/nacl_io/kernel_wrap_newlib.cc
index 535d16c401624a6d3bd4095adb3bb9548c25657f..13473c3f4dca61aa95dad7c2df55de48a96010df 100644
--- a/native_client_sdk/src/libraries/nacl_io/kernel_wrap_newlib.cc
+++ b/native_client_sdk/src/libraries/nacl_io/kernel_wrap_newlib.cc
@@ -304,9 +304,9 @@ int _real_isatty(int fd, int* result) {
   return REAL(isatty)(fd, result);
 }
 
-int _real_getdents(int fd, void* nacl_buf, size_t nacl_count, size_t* nread) {
+int _real_getdents(int fd, struct dirent* buf, size_t count, size_t* nread) {
   CHECK_REAL(getdents);
-  return REAL(getdents)(fd, static_cast<dirent*>(nacl_buf), nacl_count, nread);
+  return REAL(getdents)(fd, buf, count, nread);
 }
 
 int _real_lseek(int fd, off_t offset, int whence, off_t* new_offset) {