Fix weird typo which leads to unallocated memory access for nodes with 4 results.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91233 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/SelectionDAG/SelectionDAG.cpp b/lib/CodeGen/SelectionDAG/SelectionDAG.cpp
index abf36e5..c74a2e4 100644
--- a/lib/CodeGen/SelectionDAG/SelectionDAG.cpp
+++ b/lib/CodeGen/SelectionDAG/SelectionDAG.cpp
@@ -4177,7 +4177,7 @@
                           I->VTs[2] == VT3 && I->VTs[3] == VT4)
       return *I;
 
-  EVT *Array = Allocator.Allocate<EVT>(3);
+  EVT *Array = Allocator.Allocate<EVT>(4);
   Array[0] = VT1;
   Array[1] = VT2;
   Array[2] = VT3;