Change the diagnostics which said 'accepted as an extension' to instead say
'is an extension'. The former is inappropriate and confusing when building with
-Werror/-pedantic-errors.

llvm-svn: 147357
diff --git a/clang/test/SemaTemplate/instantiate-static-var.cpp b/clang/test/SemaTemplate/instantiate-static-var.cpp
index d2b0459..f309f29 100644
--- a/clang/test/SemaTemplate/instantiate-static-var.cpp
+++ b/clang/test/SemaTemplate/instantiate-static-var.cpp
@@ -2,7 +2,7 @@
 template<typename T, T Divisor>
 class X {
 public:
-  static const T value = 10 / Divisor; // expected-error{{in-class initializer is not a constant expression}}
+  static const T value = 10 / Divisor; // expected-error{{in-class initializer for static data member is not a constant expression}}
 };
 
 int array1[X<int, 2>::value == 5? 1 : -1];
@@ -114,4 +114,3 @@
   template class X1<char>;
 
 }
-