only downsample with ratios above 1

oversampling/oversampler.h

@@ -77,13 +77,13 @@ public:
 		if (ratio > 1) {
 			lowpass_out1.process_block(buffer[0].data(), required_blocksize);
 			lowpass_out2.process_block(buffer[1].data(), required_blocksize);
-		}
 
 			for (int i = 0; i < num_samples; ++i) {
 				_outputs[0][i] = buffer[0][i * ratio];
 				_outputs[1][i] = buffer[1][i * ratio];
 			}
 		}
+	}
 
 private:
 	int ratio = 1;