Fix -pedantic warning


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28634 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Analysis/IPA/CallGraph.cpp b/lib/Analysis/IPA/CallGraph.cpp
index 71b303b..f8846d3 100644
--- a/lib/Analysis/IPA/CallGraph.cpp
+++ b/lib/Analysis/IPA/CallGraph.cpp
@@ -19,7 +19,7 @@
 #include <iostream>
 using namespace llvm;
 
-void llvm::BasicCallGraphStub() {}
+int llvm::BasicCallGraphStub;
 
 static bool isOnlyADirectCall(Function *F, CallSite CS) {
   if (!CS.getInstruction()) return false;