Update for LLVM API change.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@75446 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/CGExprAgg.cpp b/lib/CodeGen/CGExprAgg.cpp
index 46ccdd8..39351d8 100644
--- a/lib/CodeGen/CGExprAgg.cpp
+++ b/lib/CodeGen/CGExprAgg.cpp
@@ -360,7 +360,7 @@
 void AggExprEmitter::EmitNullInitializationToLValue(LValue LV, QualType T) {
   if (!CGF.hasAggregateLLVMType(T)) {
     // For non-aggregates, we can store zero
-    llvm::Value *Null = llvm::Constant::getNullValue(CGF.ConvertType(T));
+    llvm::Value *Null = CGF.getLLVMContext().getNullValue(CGF.ConvertType(T));
     CGF.EmitStoreThroughLValue(RValue::get(Null), LV, T);
   } else {
     // Otherwise, just memset the whole thing to zero.  This is legal