Fix sdcard truncates.

Use truncate64 instead of truncate so we don't truncate (ho ho) the offset.

(cherrypick of 4568565e85bf2e1ea11b2e09d72e244088c05dbc.)

Bug: https://code.google.com/p/android/issues/detail?id=74039
Change-Id: I63711ccd299e3ebc475563b1999817d1919571ab

sdcard/sdcard.c

@@ -903,7 +903,7 @@ static int handle_setattr(struct fuse* fuse, struct fuse_handler* handler,
     /* XXX: incomplete implementation on purpose.
      * chmod/chown should NEVER be implemented.*/
 
-    if ((req->valid & FATTR_SIZE) && truncate(path, req->size) < 0) {
+    if ((req->valid & FATTR_SIZE) && truncate64(path, req->size) < 0) {
         return -errno;
     }