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Error messages

Signed-off-by: Jean-Marc Valin <jmvalin@jmvalin.ca>

--- a/dnn/lpcnet.c

+++ b/dnn/lpcnet.c

@@ -204,15 +204,25 @@

         return 0;

     }

     fin = fopen(argv[1], "rb");

+    if (fin == NULL) {

+	fprintf(stderr, "Can't open %s\n", argv[1]);

+	exit(1);

+    }

+

     fout = fopen(argv[2], "wb");

+    if (fout == NULL) {

+	fprintf(stderr, "Can't open %s\n", argv[2]);

+	exit(1);

+    }

+

     while (1) {

         float in_features[NB_TOTAL_FEATURES];

         float features[NB_FEATURES];

         short pcm[FRAME_SIZE];

         fread(in_features, sizeof(features[0]), NB_TOTAL_FEATURES, fin);

+        if (feof(fin)) break;

         RNN_COPY(features, in_features, NB_FEATURES);

         RNN_CLEAR(&features[18], 18);

-        if (feof(fin)) break;

         lpcnet_synthesize(net, pcm, features, FRAME_SIZE);

         fwrite(pcm, sizeof(pcm[0]), FRAME_SIZE, fout);

     }

-- 

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