Fix test memory leaks

tests/DummyReader.cpp

@@ -110,6 +110,8 @@ TEST_CASE( "Fake_Frame", "[libopenshot][dummyreader]" ) {
 
 		// Add test frame to dummy reader
 		cache.Add(f);
+
+		delete[] audio_buffer;
 	}
 
 	// Create a default fraction (should be 1/1)

tests/FrameMapper.cpp

@@ -238,7 +238,7 @@ TEST_CASE( "resample_audio_mapper", "[libopenshot][framemapper]" ) {
 		// Create blank frame (with specific frame #, samples, and channels)
 		// Sample count should be 44100 / 30 fps = 1470 samples per frame
 		int sample_count = 1470;
-		std::shared_ptr<openshot::Frame> f(new openshot::Frame(frame_number, sample_count, 2));
+		auto f = std::make_shared<openshot::Frame>(frame_number, sample_count, 2);
 
 		// Create test samples with sin wave (predictable values)
 		float *audio_buffer = new float[sample_count * 2];
@@ -256,6 +256,8 @@ TEST_CASE( "resample_audio_mapper", "[libopenshot][framemapper]" ) {
 
 		// Add test frame to dummy reader
 		cache.Add(f);
+
+		delete[] audio_buffer;
 	}
 
 	// Create a default fraction (should be 1/1)
@@ -377,7 +379,7 @@ TEST_CASE( "redistribute_samples_per_frame", "[libopenshot][framemapper]" ) {
 		// Create blank frame (with specific frame #, samples, and channels)
 		// Sample count should be 44100 / 30 fps = 1470 samples per frame
 		int sample_count = 1470;
-		std::shared_ptr<openshot::Frame> f(new openshot::Frame(frame_number, sample_count, 2));
+		auto f = std::make_shared<openshot::Frame>(frame_number, sample_count, 2);
 
 		// Create test samples with incrementing value
 		float *audio_buffer = new float[sample_count];
@@ -394,6 +396,8 @@ TEST_CASE( "redistribute_samples_per_frame", "[libopenshot][framemapper]" ) {
 
 		// Add test frame to dummy reader
 		cache.Add(f);
+
+		delete[] audio_buffer;
 	}
 
 	// Create a default fraction (should be 1/1)