Fix warnings about reaching end of non-void function

llvm-svn: 13852
diff --git a/llvm/lib/Analysis/IPA/Andersens.cpp b/llvm/lib/Analysis/IPA/Andersens.cpp
index 6af1f61..371a8a0 100644
--- a/llvm/lib/Analysis/IPA/Andersens.cpp
+++ b/llvm/lib/Analysis/IPA/Andersens.cpp
@@ -491,6 +491,7 @@
   } else {
     assert(0 && "Unknown constant pointer!");
   }
+  return 0;
 }
 
 /// getNodeForConstantPointerTarget - Return the node POINTED TO by the
@@ -518,6 +519,7 @@
   } else {
     assert(0 && "Unknown constant pointer!");
   }
+  return 0;
 }
 
 /// AddGlobalInitializerConstraints - Add inclusion constraints for the memory