From 6b6a113dd688cb470a892b875c0a4150860855af Mon Sep 17 00:00:00 2001
From: Tom Payne <twpayne@gmail.com>
Date: Sat, 12 Oct 2024 02:14:09 +0000
Subject: [PATCH] Make destructors safe to call with nil receivers

---
 coordseq.go          | 3 +++
 geometry/geometry.go | 3 +++
 prepgeom.go          | 3 +++
 3 files changed, 9 insertions(+)

diff --git a/coordseq.go b/coordseq.go
index 9fd620a73..3b61393a5 100644
--- a/coordseq.go
+++ b/coordseq.go
@@ -21,6 +21,9 @@ func (s *CoordSeq) Clone() *CoordSeq {
 
 // Destroy destroys s and all resources associated with s.
 func (s *CoordSeq) Destroy() {
+	if s == nil || s.context == nil {
+		return
+	}
 	s.context.Lock()
 	defer s.context.Unlock()
 	C.GEOSCoordSeq_destroy_r(s.context.handle, s.s)
diff --git a/geometry/geometry.go b/geometry/geometry.go
index 20f0b2f2c..0bd1da9c3 100644
--- a/geometry/geometry.go
+++ b/geometry/geometry.go
@@ -31,6 +31,9 @@ func (g *Geometry) Bounds() *geos.Box2D {
 
 // Destroy destroys g's geom.
 func (g *Geometry) Destroy() {
+	if g == nil || g.Geom == nil {
+		return
+	}
 	g.Geom.Destroy()
 	g.Geom = nil
 }
diff --git a/prepgeom.go b/prepgeom.go
index 5e0860ba5..48037f920 100644
--- a/prepgeom.go
+++ b/prepgeom.go
@@ -129,6 +129,9 @@ func (pg *PrepGeom) Crosses(g *Geom) bool {
 
 // Destroy destroys pg and all resources associated with s.
 func (pg *PrepGeom) Destroy() {
+	if pg == nil || pg.parent == nil || pg.parent.context == nil {
+		return
+	}
 	pg.parent.context.Lock()
 	defer pg.parent.context.Unlock()
 	C.GEOSPreparedGeom_destroy_r(pg.parent.context.handle, pg.pgeom)