at_plus_a takes one less argument then the prototype declaration.
Found via -Wlto-type-mismatch.

Submitted upstream: <https://github.com/xiaoyeli/superlu_mt/pull/7>

diff --git a/SRC/sp_colorder.c b/SRC/sp_colorder.c
index a5317cb6d50aea9c..341f79f93bc3e112 100644
--- a/SRC/sp_colorder.c
+++ b/SRC/sp_colorder.c
@@ -74,7 +74,7 @@ sp_colorder(SuperMatrix *A, int_t *perm_c, superlumt_options_t *options,
     int_t *part_super_ata;
 
     extern void at_plus_a(const int_t, const int_t, int_t *, int_t *,
-			  int_t *, int_t **, int_t **, int_t);
+			  int_t *, int_t **, int_t **);
 
     n     = A->ncol;
 
@@ -116,7 +116,7 @@ sp_colorder(SuperMatrix *A, int_t *perm_c, superlumt_options_t *options,
 
 	    /* Form B = A + A'. */
 	    at_plus_a(n, Astore->nnz, Astore->colptr, Astore->rowind,
-		      &bnz, &b_colptr, &b_rowind, 1);
+		      &bnz, &b_colptr, &b_rowind);
 	    
 	    /* Form C = Pc*B*Pc'. */
 	    c_colbeg = (int_t*) intMalloc(n);