Don't copy or initialize empty classes. Fixes PR7012.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@102891 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/test/CodeGenCXX/new.cpp b/test/CodeGenCXX/new.cpp
index ca7c52f..cc62885 100644
--- a/test/CodeGenCXX/new.cpp
+++ b/test/CodeGenCXX/new.cpp
@@ -90,7 +90,7 @@
   return new(1, 2, 3.45, 100) A;
 }
 
-struct B { };
+struct B { int a; };
 void t11() {
   // CHECK: call noalias i8* @_Znwm
   // CHECK: call void @llvm.memset.p0i8.i64(