Fix a bug in -no-aa that caused two DSGraph tests to XPASS.

llvm-svn: 18962
diff --git a/llvm/lib/Analysis/BasicAliasAnalysis.cpp b/llvm/lib/Analysis/BasicAliasAnalysis.cpp
index d11aa7b..9b8eb42 100644
--- a/llvm/lib/Analysis/BasicAliasAnalysis.cpp
+++ b/llvm/lib/Analysis/BasicAliasAnalysis.cpp
@@ -48,7 +48,8 @@
       return MayAlias;
     }
 
-    virtual ModRefBehavior getModRefBehavior(Function *F, CallSite CS) {
+    virtual ModRefBehavior getModRefBehavior(Function *F, CallSite CS,
+                                         std::vector<PointerAccessInfo> *Info) {
       return UnknownModRefBehavior;
     }