[clang-format] Fix comment indentation in text protos

Summary: This patch fixes a bug where the comment indent of comments in text protos gets messed up because by default paren states get created with AlignColons = true (which makes snese for ObjC).

Subscribers: klimek, cfe-commits

Differential Revision: https://reviews.llvm.org/D43194

llvm-svn: 324896
diff --git a/clang/lib/Format/ContinuationIndenter.cpp b/clang/lib/Format/ContinuationIndenter.cpp
index 109dd17..64d8bb7 100644
--- a/clang/lib/Format/ContinuationIndenter.cpp
+++ b/clang/lib/Format/ContinuationIndenter.cpp
@@ -200,6 +200,7 @@
     // global scope.
     State.Stack.back().AvoidBinPacking = true;
     State.Stack.back().BreakBeforeParameter = true;
+    State.Stack.back().AlignColons = false;
   }
 
   // The first token has already been indented and thus consumed.