clang-format: Improve format of lambdas in ctor initializers.

Before:
  Constructor()
      : Constructor([] { // comment
        int i;
      }) {}

After:
  Constructor()
      : Constructor([] { // comment
          int i;
        }) {}

llvm-svn: 225625
diff --git a/clang/lib/Format/ContinuationIndenter.cpp b/clang/lib/Format/ContinuationIndenter.cpp
index f05471e..4cc92b0 100644
--- a/clang/lib/Format/ContinuationIndenter.cpp
+++ b/clang/lib/Format/ContinuationIndenter.cpp
@@ -632,6 +632,7 @@
     //       ^ line up here.
     State.Stack.back().Indent =
         State.Column + (Style.BreakConstructorInitializersBeforeComma ? 0 : 2);
+    State.Stack.back().NestedBlockIndent = State.Stack.back().Indent;
     if (Style.ConstructorInitializerAllOnOneLineOrOnePerLine)
       State.Stack.back().AvoidBinPacking = true;
     State.Stack.back().BreakBeforeParameter = false;