[Concepts] Include the found concept decl when dumping the ConceptSpecializationExpr

Differential Revision: https://reviews.llvm.org/D85124
diff --git a/clang/lib/AST/TextNodeDumper.cpp b/clang/lib/AST/TextNodeDumper.cpp
index 5b6c608..3d47d5c 100644
--- a/clang/lib/AST/TextNodeDumper.cpp
+++ b/clang/lib/AST/TextNodeDumper.cpp
@@ -1340,6 +1340,12 @@
   }
 }
 
+void TextNodeDumper::VisitConceptSpecializationExpr(
+    const ConceptSpecializationExpr *Node) {
+  OS << " ";
+  dumpBareDeclRef(Node->getFoundDecl());
+}
+
 void TextNodeDumper::VisitRValueReferenceType(const ReferenceType *T) {
   if (T->isSpelledAsLValue())
     OS << " written as lvalue reference";