GPencil: Fix unreported assert when use select Box in single point strokes

The assert was when use segment selection mode.

1 files changed, 3 insertions, 0 deletions

diff --git a/source/blender/editors/gpencil/gpencil_utils.c b/source/blender/editors/gpencil/gpencil_utils.c
index 28a90a26a9d..e02da8ebc8a 100644
--- a/source/blender/editors/gpencil/gpencil_utils.c
+++ b/source/blender/editors/gpencil/gpencil_utils.c
@@ -2337,6 +2337,9 @@ int ED_gpencil_select_stroke_segment(bGPDlayer *gpl,
                                      float r_hita[3],
                                      float r_hitb[3])
 {
+  if (gps->totpoints < 2) {
+    return 0;
+  }
   const float min_factor = 0.0015f;
   bGPDspoint *pta1 = NULL;
   bGPDspoint *pta2 = NULL;