reload1.c (delete_output_reload): Ignore single USE that was emitted for the pseudo use of this INSN.

	* reload1.c (delete_output_reload): Ignore single USE that
	was emitted for the pseudo use of this INSN.
	If the no reference to REG between OUTPUT_RELOAD_INSN and INSN
	remains, we can always delete OUTPUT_RELOAD_INSN.

From-SVN: r19762