Tweak null dereference diagnostics to give clearer diagnostics when
a null dereference results from a field access.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@99236 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/test/Analysis/inline.c b/test/Analysis/inline.c
index 13d4f7f..952de73 100644
--- a/test/Analysis/inline.c
+++ b/test/Analysis/inline.c
@@ -15,6 +15,6 @@
   }
   if (x == 2) {
     int *p = 0;
-    *p = 3; // expected-warning{{Dereference of null pointer loaded from variable}}
+    *p = 3; // expected-warning{{Dereference of null pointer (loaded from variable 'p')}}
   }
 }