Improve formatting of trailing annotations.

Before:
bool aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa __attribute__((
    unused));

After:
bool aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
    __attribute__((unused));

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@177034 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Format/TokenAnnotator.cpp b/lib/Format/TokenAnnotator.cpp
index db5924c..0b8f286 100644
--- a/lib/Format/TokenAnnotator.cpp
+++ b/lib/Format/TokenAnnotator.cpp
@@ -1111,12 +1111,12 @@
       Left.Parent->is(tok::r_paren))
     return !Right.isOneOf(tok::l_brace, tok::semi, tok::equal);
 
+  if (Right.is(tok::kw___attribute))
+    return true;
+
   // We only break before r_brace if there was a corresponding break before
   // the l_brace, which is tracked by BreakBeforeClosingBrace.
-  if (Right.is(tok::r_brace))
-    return false;
-
-  if (Right.isOneOf(tok::r_paren, tok::greater))
+  if (Right.isOneOf(tok::r_brace, tok::r_paren, tok::greater))
     return false;
   if (Left.is(tok::identifier) && Right.is(tok::string_literal))
     return true;