Fix MSVC build.

llvm-svn: 85505
diff --git a/llvm/lib/ExecutionEngine/JIT/JIT.h b/llvm/lib/ExecutionEngine/JIT/JIT.h
index a5b728a..fb3cb24 100644
--- a/llvm/lib/ExecutionEngine/JIT/JIT.h
+++ b/llvm/lib/ExecutionEngine/JIT/JIT.h
@@ -130,6 +130,7 @@
 
   void *getPointerToBasicBlock(BasicBlock *BB) {
     assert(0 && "JIT does not support address-of-label yet!");
+    return 0;
   }
   
   /// getOrEmitGlobalVariable - Return the address of the specified global