[gegl] matting-levin: use umfpack's own long type

[Øyvind "pippin" Kolås <ok src gnome org>]

commit 2a2e196bea8333a214ec83667cf8da80d25a8e46
Author: Øyvind Kolås <pippin gimp org>
Date:   Sat Mar 21 19:24:46 2020 +0100

    matting-levin: use umfpack's own long type

 operations/external/matting-levin.c | 12 ++++++------
 1 file changed, 6 insertions(+), 6 deletions(-)
---
diff --git a/operations/external/matting-levin.c b/operations/external/matting-levin.c
index 24755fb67..3860572ed 100644
--- a/operations/external/matting-levin.c
+++ b/operations/external/matting-levin.c
@@ -91,12 +91,12 @@ property_int    (active_levels, _("Active levels"), 2)
  */
 typedef struct
 {
-  guint    elems,
-           columns,
-           rows;
-  glong   *col_idx,
-          *row_idx;
-  gdouble *values;
+  guint             elems,
+                    columns,
+                    rows;
+  SuiteSparse_long *col_idx,
+                   *row_idx;
+  gdouble          *values;
 } sparse_t;