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diff -ru libgsf-1.14.19/gsf/gsf-msole-utils.c libgsf-1.14.19.foo/gsf/gsf-msole-utils.c
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--- libgsf-1.14.19/gsf/gsf-msole-utils.c	2010-08-29 01:23:25.000000000 +0100
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+++ libgsf-1.14.19.foo/gsf/gsf-msole-utils.c	2010-11-09 16:31:16.000000000 +0000
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@@ -894,8 +894,13 @@
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 		error = NULL;
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 		if (!parse_vt_cf (res, data, data_end, &error)) {
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 			/* suck, we can't propagate the error upwards */
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-			g_warning ("error: %s", error->message);
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-			g_error_free (error);
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+			if (error) {
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+			    g_warning ("error: %s", error->message);
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+			    g_error_free (error);
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+			}
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+			else {
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+			    g_warning ("error: %s", "Corrupt document");
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+			    g_warning ("unknown error parsing vt_cf");
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+			}
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 			g_free (res);
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 			res = NULL;
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 		}