Add am AST matcher for isMoveAssignmentOperator.

Patch by Jonathan Coe.

llvm-svn: 258573
diff --git a/clang/lib/ASTMatchers/Dynamic/Registry.cpp b/clang/lib/ASTMatchers/Dynamic/Registry.cpp
index 51cbac6..6aee484 100644
--- a/clang/lib/ASTMatchers/Dynamic/Registry.cpp
+++ b/clang/lib/ASTMatchers/Dynamic/Registry.cpp
@@ -291,6 +291,7 @@
   REGISTER_MATCHER(isInTemplateInstantiation);
   REGISTER_MATCHER(isListInitialization);
   REGISTER_MATCHER(isMemberInitializer);
+  REGISTER_MATCHER(isMoveAssignmentOperator);
   REGISTER_MATCHER(isMoveConstructor);
   REGISTER_MATCHER(isNoThrow);
   REGISTER_MATCHER(isOverride);