Formatter: + and - after { are unary operators.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@172301 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Format/Format.cpp b/lib/Format/Format.cpp
index 77fba1f..5140639 100644
--- a/lib/Format/Format.cpp
+++ b/lib/Format/Format.cpp
@@ -994,7 +994,7 @@
         Tok.Parent->is(tok::comma) || Tok.Parent->is(tok::l_square) ||
         Tok.Parent->is(tok::question) || Tok.Parent->is(tok::colon) ||
         Tok.Parent->is(tok::kw_return) || Tok.Parent->is(tok::kw_case) ||
-        Tok.Parent->is(tok::at))
+        Tok.Parent->is(tok::at) || Tok.Parent->is(tok::l_brace))
       return TT_UnaryOperator;
 
     // There can't be to consecutive binary operators.
diff --git a/unittests/Format/FormatTest.cpp b/unittests/Format/FormatTest.cpp
index 061ac57..9106a1f 100644
--- a/unittests/Format/FormatTest.cpp
+++ b/unittests/Format/FormatTest.cpp
@@ -956,6 +956,9 @@
                "case -1:\n"
                "  break;\n"
                "}");
+
+  verifyFormat("const NSPoint kBrowserFrameViewPatternOffset = { -5, +3 };");
+  verifyFormat("const NSPoint kBrowserFrameViewPatternOffset = { +5, -3 };");
 }
 
 TEST_F(FormatTest, UndestandsOverloadedOperators) {