Remove unneeded whitespace.

* fhandler_fifo.cc (fhandler_fifo::open): Rework to cause errno to be set to
ENXIO when opening a fifo write/nonblocking.
* environ.cc (ucreqenv): Rename to ucenv.  Move code from old ucenv here and
conditionalize it on create_upcaseenv.
(ucenv): Delete.
(environ_init): Fix compiler warning by moving create_upcaseenv test to ucenv.
Don't bother checking for child_proc_info when calling ucenv since it is
assumed to be NULL at the point where the function is called.
* path.cc (symlink_worker): Turn off MS-DOS path warnings when dealing with
devices since the device handler passes in a translated MS-DOS path.
* sec_auth.cc (lsaprivkeyauth): Avoid variable initialization which causes a
compiler error.
* fhandler_netdrive.cc: Update copyright.

winsup/cygwin/fhandler.h

@@ -394,13 +394,13 @@ class fhandler_mailslot : public fhandler_base
   select_record *select_read (select_record *s);
 };
 
-struct wsa_event 
+struct wsa_event
 {
   LONG serial_number;
   long events;
   int  connect_errorcode;
   pid_t owner;
-};  
+};
 
 class fhandler_socket: public fhandler_base
 {