Register the isCopyAssignmentOperator AST matcher so that it can be used dynamically.

Path by Jonathan Coe.

llvm-svn: 258341
diff --git a/clang/lib/ASTMatchers/Dynamic/Registry.cpp b/clang/lib/ASTMatchers/Dynamic/Registry.cpp
index 9cfccdc..621c6b0 100644
--- a/clang/lib/ASTMatchers/Dynamic/Registry.cpp
+++ b/clang/lib/ASTMatchers/Dynamic/Registry.cpp
@@ -268,6 +268,7 @@
   REGISTER_MATCHER(isClass);
   REGISTER_MATCHER(isConst);
   REGISTER_MATCHER(isConstQualified);
+  REGISTER_MATCHER(isCopyAssignmentOperator);
   REGISTER_MATCHER(isCopyConstructor);
   REGISTER_MATCHER(isDefaultConstructor);
   REGISTER_MATCHER(isDefaulted);