Silence a Release-Asserts warning.

llvm-svn: 72013
diff --git a/clang/lib/Analysis/RegionStore.cpp b/clang/lib/Analysis/RegionStore.cpp
index 440080d..e1d875b 100644
--- a/clang/lib/Analysis/RegionStore.cpp
+++ b/clang/lib/Analysis/RegionStore.cpp
@@ -633,6 +633,7 @@
   }
 
   assert(0 && "Unprocessed region.");
+  return 0;
 }
 
 SVal RegionStoreManager::EvalBinOp(BinaryOperator::Opcode Op, Loc L, NonLoc R) {