Fix T55745: Checker de-select, inconsistent selection

With these changes, successive selections result in an even pattern.

1 files changed, 2 insertions, 2 deletions

diff --git a/source/blender/editors/curve/editcurve_select.c b/source/blender/editors/curve/editcurve_select.c
index f67ccf1e4bd..d0abcf32107 100644
--- a/source/blender/editors/curve/editcurve_select.c
+++ b/source/blender/editors/curve/editcurve_select.c
@@ -1311,7 +1311,7 @@ static void select_nth_bezt(Nurb *nu, BezTriple *bezt, const struct CheckerInter
 
   while (a--) {
     const int depth = abs(start - a);
-    if (WM_operator_properties_checker_interval_test(params, depth)) {
+    if (!WM_operator_properties_checker_interval_test(params, depth)) {
       select_beztriple(bezt, DESELECT, SELECT, HIDDEN);
     }
 
@@ -1334,7 +1334,7 @@ static void select_nth_bp(Nurb *nu, BPoint *bp, const struct CheckerIntervalPara
 
   while (a--) {
     const int depth = abs(pnt - startpnt) + abs(row - startrow);
-    if (WM_operator_properties_checker_interval_test(params, depth)) {
+    if (!WM_operator_properties_checker_interval_test(params, depth)) {
       select_bpoint(bp, DESELECT, SELECT, HIDDEN);
     }