SDL: Don't pass null pointers to SDL_DestroyTexture/SDL_DestroyRenderer

SDL does not like this and will raise an assertion when built with
internal SDL assertions turned on. With internal assertions turned
off, it will still call SDL_SetError any time a null pointer is
passed, though it will not raise an assertion or crash.

1 files changed, 4 insertions, 2 deletions

diff --git a/backends/graphics/surfacesdl/surfacesdl-graphics.cpp b/backends/graphics/surfacesdl/surfacesdl-graphics.cpp
index 6d3b3c4750..c2e0fd20e4 100644
--- a/backends/graphics/surfacesdl/surfacesdl-graphics.cpp
+++ b/backends/graphics/surfacesdl/surfacesdl-graphics.cpp
@@ -2656,10 +2656,12 @@ void SurfaceSdlGraphicsManager::notifyResize(const int width, const int height)
 
 #if SDL_VERSION_ATLEAST(2, 0, 0)
 void SurfaceSdlGraphicsManager::deinitializeRenderer() {
-	SDL_DestroyTexture(_screenTexture);
+	if (_screenTexture)
+		SDL_DestroyTexture(_screenTexture);
 	_screenTexture = nullptr;
 
-	SDL_DestroyRenderer(_renderer);
+	if (_renderer)
+		SDL_DestroyRenderer(_renderer);
 	_renderer = nullptr;
 }