fix size_t

From-SVN: r73680

gcc/testsuite/g++.dg/init/placement1.C

@@ -2,7 +2,7 @@
 // We were expanding the same TARGET_EXPR twice, for placement new and
 // delete.
 
-void* operator new    (unsigned int, void*) throw();
+void* operator new    (__SIZE_TYPE__, void*) throw();
 void  operator delete (void*, void*)        throw();
 
 struct A { A(); };

gcc/testsuite/g++.dg/init/placement2.C

@@ -3,7 +3,7 @@
 
 // { dg-do run }
 
-void* operator new    (unsigned int sz, void*) { return operator new (sz); }
+void* operator new    (__SIZE_TYPE__ sz, void*) { return operator new (sz); }
 void  operator delete (void* p, void*)         { operator delete (p); }
 
 struct A { A() { throw 1; } };