[lldb] Update operator lookup calls

Author: hamishknight

lldb/source/Symbol/SwiftASTContext.cpp

@@ -31,6 +31,7 @@
 #include "swift/AST/ImportCache.h"
 #include "swift/AST/ModuleLoader.h"
 #include "swift/AST/NameLookup.h"
+#include "swift/AST/OperatorNameLookup.h"
 #include "swift/AST/SearchPathOptions.h"
 #include "swift/AST/SubstitutionMap.h"
 #include "swift/AST/Type.h"
@@ -4495,18 +4496,17 @@ size_t SwiftASTContext::FindTypesOrDecls(const char *name,
       swift_module->lookupValue(identifier, swift::NLKind::UnqualifiedLookup,
                                 value_decls);
     if (identifier.isOperator()) {
-      swift::OperatorDecl *op_decl =
-          swift_module->lookupPrefixOperator(identifier);
-      if (op_decl)
-        results.emplace(DeclToTypeOrDecl(GetASTContext(), op_decl));
-      if ((op_decl = swift_module->lookupInfixOperator(identifier)))
-        results.emplace(DeclToTypeOrDecl(GetASTContext(), op_decl));
-      if ((op_decl = swift_module->lookupPostfixOperator(identifier)))
-        results.emplace(DeclToTypeOrDecl(GetASTContext(), op_decl));
-    }
-    if (swift::PrecedenceGroupDecl *pg_decl =
-            swift_module->lookupPrecedenceGroup(identifier))
-      results.emplace(DeclToTypeOrDecl(GetASTContext(), pg_decl));
+      if (auto *op = swift_module->lookupPrefixOperator(identifier))
+        results.emplace(DeclToTypeOrDecl(GetASTContext(), op));
+
+      if (auto *op = swift_module->lookupInfixOperator(identifier).getSingle())
+        results.emplace(DeclToTypeOrDecl(GetASTContext(), op));
+
+      if (auto *op = swift_module->lookupPostfixOperator(identifier))
+        results.emplace(DeclToTypeOrDecl(GetASTContext(), op));
+    }
+    if (auto *pg = swift_module->lookupPrecedenceGroup(identifier).getSingle())
+      results.emplace(DeclToTypeOrDecl(GetASTContext(), pg));
 
     for (auto decl : value_decls)
       results.emplace(DeclToTypeOrDecl(GetASTContext(), decl));