[3.x] Fix trim when importing WAV

(cherry picked from commit 5cd47a1984118b1e96b96d8ebb6ca7811c9f4d02)

editor/import/resource_importer_wav.cpp

@@ -404,7 +404,7 @@ Error ResourceImporterWAV::import(const String &p_source_file, const String &p_s
 
 	bool trim = p_options["edit/trim"];
 
-	if (trim && (loop_mode != AudioStreamSample::LOOP_DISABLED) && format_channels > 0) {
+	if (trim && (loop_mode == AudioStreamSample::LOOP_DISABLED) && format_channels > 0) {
 		int first = 0;
 		int last = (frames / format_channels) - 1;
 		bool found = false;