declare variables one per line in cpython function definition

Author: lkirk

python/_tskitmodule.c

@@ -10666,19 +10666,29 @@ TreeSequence_k_way_ld_matrix(TreeSequence *self, PyObject *args, PyObject *kwds,
     PyObject *ret = NULL;
     static char *kwlist[] = { "sample_set_sizes", "sample_sets", "indexes", "row_sites",
         "col_sites", "row_positions", "column_positions", "mode", NULL };
-
-    PyObject *row_sites = NULL, *col_sites = NULL, *row_positions = NULL,
-             *col_positions = NULL, *sample_set_sizes = NULL, *sample_sets = NULL,
-             *indexes = NULL;
-    PyArrayObject *row_sites_array = NULL, *col_sites_array = NULL,
-                  *row_positions_array = NULL, *col_positions_array = NULL,
-                  *sample_sets_array = NULL, *sample_set_sizes_array = NULL,
-                  *indexes_array = NULL, *result_matrix = NULL;
-    tsk_id_t *row_sites_parsed = NULL, *col_sites_parsed = NULL;
-    double *row_positions_parsed = NULL, *col_positions_parsed = NULL;
+    PyObject *row_sites = NULL;
+    PyObject *col_sites = NULL;
+    PyObject *row_positions = NULL;
+    PyObject *col_positions = NULL;
+    PyObject *sample_set_sizes = NULL;
+    PyObject *sample_sets = NULL;
+    PyObject *indexes = NULL;
+    PyArrayObject *row_sites_array = NULL;
+    PyArrayObject *col_sites_array = NULL;
+    PyArrayObject *row_positions_array = NULL;
+    PyArrayObject *col_positions_array = NULL;
+    PyArrayObject *sample_sets_array = NULL;
+    PyArrayObject *sample_set_sizes_array = NULL;
+    PyArrayObject *indexes_array = NULL;
+    PyArrayObject *result_matrix = NULL;
+    tsk_id_t *row_sites_parsed = NULL;
+    tsk_id_t *col_sites_parsed = NULL;
+    double *row_positions_parsed = NULL;
+    double *col_positions_parsed = NULL;
     npy_intp *shape, result_dim[3] = { 0, 0, 0 };
     char *mode = NULL;
-    tsk_size_t num_sample_sets, num_set_index_tuples;
+    tsk_size_t num_sample_sets;
+    tsk_size_t num_set_index_tuples;
     tsk_flags_t options = 0;
     int err;