Minor code clean up.
diff --git a/Objects/setobject.c b/Objects/setobject.c
index 9bdbbba..23ab95c 100644
--- a/Objects/setobject.c
+++ b/Objects/setobject.c
@@ -89,7 +89,7 @@
             freeslot = entry;
 
         if (i + LINEAR_PROBES <= mask) {
-            for (j = 1 ; j <= LINEAR_PROBES ; j++) {
+            for (j = 0 ; j < LINEAR_PROBES ; j++) {
                 entry++;
                 if (entry->key == NULL)
                     goto found_null;
@@ -151,7 +151,7 @@
         if (entry->key == NULL)
             goto found_null;
         if (i + LINEAR_PROBES <= mask) {
-            for (j = 1; j <= LINEAR_PROBES; j++) {
+            for (j = 0; j < LINEAR_PROBES; j++) {
                 entry++;
                 if (entry->key == NULL)
                     goto found_null;