Improve dead store diagnostic.

llvm-svn: 49711
diff --git a/clang/lib/Analysis/DeadStores.cpp b/clang/lib/Analysis/DeadStores.cpp
index 62a4e3e..719b5eb 100644
--- a/clang/lib/Analysis/DeadStores.cpp
+++ b/clang/lib/Analysis/DeadStores.cpp
@@ -166,7 +166,7 @@
   }
   
   virtual const char* getDescription() const {
-    return "Value stored to variable is never used.";
+    return "Value stored to variable is never subsequently read.";
   }
   
   virtual void EmitWarnings(BugReporter& BR) {