shithub: jbig2

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Check the return code from jbig2_data_in().

This avoids printing multiple 'Not a JBIG2 file header' errors on
corrupt or invalid files.

--- a/jbig2dec.c

+++ b/jbig2dec.c

@@ -445,7 +445,8 @@

       int n_bytes = fread(buf, 1, sizeof(buf), f);

       if (n_bytes <= 0)

 	break;

-      jbig2_data_in(ctx, buf, n_bytes);

+      if (jbig2_data_in(ctx, buf, n_bytes))

+	break;

     }

   fclose(f);

@@ -460,7 +461,8 @@

 	  int n_bytes = fread(buf, 1, sizeof(buf), f_page);

 	  if (n_bytes <= 0)

 	    break;

-	  jbig2_data_in(ctx, buf, n_bytes);

+	  if (jbig2_data_in(ctx, buf, n_bytes))

+	    break;

 	}

       fclose(f_page);

       jbig2_global_ctx_free(global_ctx);