Fixed compiler warnings in gcc 8

f9b7ad9a · Davis King · 5d03b99a · f9b7ad9a
Commit f9b7ad9a authored Mar 03, 2019 by Davis King
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dlib/test/compress_stream.cpp dlib/test/compress_stream.cpp +1 -1

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--- a/dlib/test/compress_stream.cpp
+++ b/dlib/test/compress_stream.cpp
@@ -75,7 +75,7 @@ namespace
            bool detected_error = false;
            try {
                test.decompress(sin,sout);
-            } catch ( typename cs::decompression_error e )
+            } catch ( typename cs::decompression_error& e )
            {
                detected_error = true;
                ++count;