Fix testsuite/g++.dg/opt/20050511-1.C compilation error on VxWorks 7

In VxWorks 7, UINT32 is defined in both modes, kernel and rtp.  Adjust
the work around accordingly.


for  gcc/testsuite/ChangeLog

	* g++.dg/opt/20050511-1.C: Work around UINT32 in vxworks rtp
	headers too.