[shotwell/wip/phako/enhanced-faces: 128/136] facedetect: Catch exception by reference

[Jens Georg <jensgeorg src gnome org>]

commit 46f668e51b17ecba1e22adea9a1c6d03978a3c13
Author: Jens Georg <mail jensge org>
Date:   Thu Oct 11 09:30:51 2018 +0200

    facedetect: Catch exception by reference

 facedetect/facedetect-opencv.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/facedetect/facedetect-opencv.cpp b/facedetect/facedetect-opencv.cpp
index fc2f7016..07722a19 100644
--- a/facedetect/facedetect-opencv.cpp
+++ b/facedetect/facedetect-opencv.cpp
@@ -80,7 +80,7 @@ bool loadNet(cv::String baseDir) {
         faceDetectNet = cv::dnn::readNetFromCaffe(baseDir + "/deploy.prototxt",
                                                   baseDir + "/" + RESNET_DETECT_CAFFE_NET);
         faceRecogNet = cv::dnn::readNetFromTorch(baseDir + "/" + OPENFACE_RECOG_TORCH_NET);
-    } catch(cv::Exception e) {
+    } catch(cv::Exception &e) {
         std::cout << "File load failed: " << e.msg << std::endl;
         return false;
     }