clang-format: Fix space in decltype-constexprs.

Before:
  static constexpr bool Bar = decltype(bar()) ::value;

After:
  static constexpr bool Bar = decltype(bar())::value;

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@189449 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Format/TokenAnnotator.cpp b/lib/Format/TokenAnnotator.cpp
index 7f29855..ee476b9 100644
--- a/lib/Format/TokenAnnotator.cpp
+++ b/lib/Format/TokenAnnotator.cpp
@@ -1180,7 +1180,8 @@
   if (Left.is(tok::coloncolon))
     return false;
   if (Right.is(tok::coloncolon))
-    return !Left.isOneOf(tok::identifier, tok::greater, tok::l_paren);
+    return !Left.isOneOf(tok::identifier, tok::greater, tok::l_paren,
+                         tok::r_paren);
   if (Left.is(tok::less) || Right.isOneOf(tok::greater, tok::less))
     return false;
   if (Right.is(tok::ellipsis))