Always destroy the texture before creating a new one.

Derp.

src/conio/sdl_con.c

@@ -552,6 +552,8 @@ static void setup_surfaces_locked(void)
 	if (win == NULL) {
 		// SDL2: This is slow sometimes... not sure why.
 		if (sdl.CreateWindowAndRenderer(cvstat.winwidth, cvstat.winheight, flags, &win, &renderer) == 0) {
+			if (texture) 
+				sdl.DestroyTexture(texture);
 			sdl.RenderClear(renderer);
 			texture = sdl.CreateTexture(renderer, SDL_PIXELFORMAT_ARGB8888, SDL_TEXTUREACCESS_STREAMING, charwidth*cols, charheight*rows);
 		}
@@ -562,6 +564,8 @@ static void setup_surfaces_locked(void)
 	}
 	else {
 		sdl.SetWindowSize(win, cvstat.winwidth, cvstat.winheight);
+		if (texture) 
+			sdl.DestroyTexture(texture);
 		texture = sdl.CreateTexture(renderer, SDL_PIXELFORMAT_ARGB8888, SDL_TEXTUREACCESS_STREAMING, charwidth*cols, charheight*rows);
 	}
 	sdl.SetWindowMinimumSize(win, cvstat.charwidth * cvstat.cols, cvstat.charheight * cvstat.rows);