[committed] fix a minor invoke.texi typo

[James E Wilson]

This fixes a problem reported by Sergei Organov on the gcc list.

I tested this on an ia64-linux machine with make info and make dvi. 
There were no regressions.
-- 
Jim Wilson, GNU Tools Support, http://www.SpecifixInc.com

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2005-07-01  James E. Wilson  <wilson@specifixinc.com>

	* doc/invoke.texi (-funit-at-a-time): Correct grammar in second bullet.

Index: invoke.texi
===================================================================
RCS file: /cvs/gcc/gcc/gcc/doc/invoke.texi,v
retrieving revision 1.640
diff -p -p -r1.640 invoke.texi
*** invoke.texi	28 Jun 2005 02:20:29 -0000	1.640
--- invoke.texi	2 Jul 2005 00:35:48 -0000
*************** though, can be replaced by @code{section
*** 5235,5241 ****
  
  @item
  @emph{unit-at-a-time} mode removes unreferenced static variables
! and functions are removed.  This may result in undefined references
  when an @code{asm} statement refers directly to variables or functions
  that are otherwise unused.  In that case either the variable/function
  shall be listed as an operand of the @code{asm} statement operand or,
--- 5235,5241 ----
  
  @item
  @emph{unit-at-a-time} mode removes unreferenced static variables
! and functions.  This may result in undefined references
  when an @code{asm} statement refers directly to variables or functions
  that are otherwise unused.  In that case either the variable/function
  shall be listed as an operand of the @code{asm} statement operand or,