Remove derelict GRStmtNodeBuilder::LastNode.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@97207 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Checker/GRExprEngine.cpp b/lib/Checker/GRExprEngine.cpp
index 30b82f7..aadfa52 100644
--- a/lib/Checker/GRExprEngine.cpp
+++ b/lib/Checker/GRExprEngine.cpp
@@ -460,7 +460,7 @@
                                 "Error evaluating statement");
 
   Builder = &builder;
-  EntryNode = builder.getLastNode();
+  EntryNode = builder.getBasePredecessor();
 
   // Set up our simple checks.
   if (BatchAuditor)