Fix unit cell point group memory leak

src/cell.c

@@ -86,6 +86,13 @@ UnitCell *cell_new()
 }
 
 
+void cell_free(UnitCell *cell)
+{
+	free(cell->pointgroup);
+	free(cell);
+}
+
+
 void cell_set_parameters(UnitCell *cell, double a, double b, double c,
                          double alpha, double beta, double gamma)
 {

src/cell.h

@@ -28,6 +28,7 @@ typedef struct _unitcell UnitCell;
 
 extern UnitCell *cell_new(void);
 extern UnitCell *cell_new_from_cell(UnitCell *orig);
+extern void cell_free(UnitCell *cell);
 
 /* Lengths in m, angles in radians */
 extern UnitCell *cell_new_from_parameters(double a, double b, double c,

src/facetron.c

@@ -324,7 +324,7 @@ int main(int argc, char *argv[])
 		find_intersections(&image, cell, da, dw, &np, 1);
 
 		hdfile_close(hdfile);
-		free(cell);
+		cell_free(cell);
 		free(filename);
 		free(image.data);
 		free(image.flags);

src/index.c

@@ -176,6 +176,6 @@ void index_pattern(struct image *image, UnitCell *cell, IndexingMethod indm,
 
 done:
 	for ( i=0; i<image->ncells; i++ ) {
-		free(image->candidate_cells[i]);
+		cell_free(image->candidate_cells[i]);
 	}
 }

src/indexamajig.c

@@ -433,7 +433,7 @@ static struct process_result process_image(struct process_args *pargs)
 	free(simage);
 
 	/* Only free cell if found */
-	free(image.indexed_cell);
+	cell_free(image.indexed_cell);
 
 done:
 	free(image.data);
@@ -865,7 +865,7 @@ int main(int argc, char *argv[])
 	free(prefix);
 	free(det->panels);
 	free(det);
-	free(cell);
+	cell_free(cell);
 	fclose(fh);
 
 	STATUS("There were %i images.\n", n_images);

src/pattern_sim.c

@@ -477,7 +477,7 @@ skip:
 	free(image.det->panels);
 	free(image.det);
 	free(powder);
-	free(cell);
+	cell_free(cell);
 	free(intensities);
 	free(outfile);
 	free(filename);

src/process_hkl.c

@@ -687,7 +687,7 @@ int main(int argc, char *argv[])
 	free(model);
 	free(counts);
 	free(output);
-	free(cell);
+	cell_free(cell);
 
 	return 0;
 }