Remove extra white spacing at end of lines.

gcc/cp/ChangeLog

gcc/cp/ChangeLog-1994

gcc/cp/ChangeLog-1999

gcc/cp/ChangeLog-2003

gcc/cp/ChangeLog.tree-ssa

gcc/cp/Make-lang.in

gcc/cp/NEWS

gcc/cp/call.c

gcc/cp/class.c

gcc/cp/cp-gimplify.c

gcc/cp/cp-objcp-common.c

gcc/cp/cp-tree.def

gcc/cp/cp-tree.h

gcc/cp/cvt.c

gcc/cp/cxx-pretty-print.c

gcc/cp/cxx-pretty-print.h

gcc/cp/decl.c

gcc/cp/decl.h

gcc/cp/decl2.c

gcc/cp/dump.c