[v3] Small testsuite patch for -Wall

[Paolo Carlini]

Hi,

tested x86_64-linux, committed.

Paolo.

/////////////////////////

2011-07-11  Paolo Carlini  <paolo.carl...@oracle.com>

        * testsuite/util/testsuite_allocator.h (propagating_allocator<>::
        operator=(const propagating_allocator<>&)): Retun *this.

Index: testsuite/util/testsuite_allocator.h
===================================================================
--- testsuite/util/testsuite_allocator.h        (revision 176144)
+++ testsuite/util/testsuite_allocator.h        (working copy)
@@ -408,6 +408,7 @@
        {
          static_assert(P2, "assigning propagating_allocator<T, true>");
          propagating_allocator(a).swap_base(*this);
+         return *this;
        }
 
       // postcondition: a.get_personality() == 0