Add GUARD_LOADING_AND_LOCK

Helper macro to reduce repetition

lib/utils/sync-helpers.hpp

@@ -5,6 +5,13 @@
 
 namespace advss {
 
+// Helper used in macro segment edit widgets
+#define GUARD_LOADING_AND_LOCK()       \
+	if (_loading || !_entryData) { \
+		return;                \
+	}                              \
+	auto lock = LockContext();
+
 [[nodiscard]] EXPORT std::mutex *GetMutex();
 [[nodiscard]] EXPORT std::lock_guard<std::mutex> LockContext();
 [[nodiscard]] EXPORT std::unique_lock<std::mutex> *GetLoopLock();