gstlal_string_triggergen:

- in autocorrelation_matrix size functions, return 0 if the matrix is missing

gstlal-burst/gst/lal/gstlal_string_triggergen.c

@@ -101,13 +101,13 @@ G_DEFINE_TYPE_WITH_CODE(
 
 static unsigned autocorrelation_channels(const gsl_matrix_float *autocorrelation_matrix)
 {
-	return autocorrelation_matrix->size1;
+	return autocorrelation_matrix ? autocorrelation_matrix->size1 : 0;
 }
 
 
 static unsigned autocorrelation_length(const gsl_matrix_float *autocorrelation_matrix)
 {
-	return autocorrelation_matrix->size2;
+	return autocorrelation_matrix ? autocorrelation_matrix->size2 : 0;
 }