abbreviate an increment

diff --git a/lib/neatogen/heap.c b/lib/neatogen/heap.c
index 8935f16b8bcd6527f71ae3754730f83363000fb6..8c16aa3ed7ec8b335c2fb5aa1b3904cc5073104e 100644 (file)
--- a/lib/neatogen/heap.c
+++ b/lib/neatogen/heap.c
@@ -117,7 +117,7 @@ void PQinitialize(void)
     PQhashsize = 4 * sqrt_nsites;
     if (PQhash == NULL)
        PQhash = N_GNEW(PQhashsize, Halfedge);
-    for (i = 0; i < PQhashsize; i += 1)
+    for (i = 0; i < PQhashsize; ++i)
        PQhash[i].PQnext = NULL;
 }