Remove bad space after "default".

Before:
switch (x) {
default : {}
}

After:
switch (x) {
default: {}
}

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@176861 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Format/TokenAnnotator.cpp b/lib/Format/TokenAnnotator.cpp
index f642a70..77815b0 100644
--- a/lib/Format/TokenAnnotator.cpp
+++ b/lib/Format/TokenAnnotator.cpp
@@ -1042,7 +1042,8 @@
   if (Tok.Type == TT_OverloadedOperatorLParen)
     return false;
   if (Tok.is(tok::colon))
-    return Line.First.isNot(tok::kw_case) && !Tok.Children.empty() &&
+    return Line.First.isNot(tok::kw_case) &&
+           Line.First.isNot(tok::kw_default) && !Tok.Children.empty() &&
            Tok.Type != TT_ObjCMethodExpr;
   if (Tok.is(tok::l_paren) && !Tok.Children.empty() &&
       Tok.Children[0].Type == TT_PointerOrReference &&
diff --git a/unittests/Format/FormatTest.cpp b/unittests/Format/FormatTest.cpp
index 0ac3c10..caf291f 100644
--- a/unittests/Format/FormatTest.cpp
+++ b/unittests/Format/FormatTest.cpp
@@ -423,6 +423,10 @@
                "}");
   verifyFormat("switch (test)\n"
                "  ;");
+  verifyFormat("switch (x) {\n"
+               "default: {\n"
+               "  // Do nothing.\n"
+               "}");
 
   verifyGoogleFormat("switch (x) {\n"
                      "  case 1:\n"