Fix mistake in sprite example

Author: sharkwouter

_includes/samples/sprite/main.c

@@ -100,7 +100,7 @@ void endFrame(){
 Texture * loadTexture(const char * filename) {
     Texture * texture = (Texture *) calloc(1, sizeof(Texture));
 
-    texture->data = (uint32_t *) stbi_load("grass.png", &(texture->width), &(texture->height), NULL, STBI_rgb_alpha);
+    texture->data = (uint32_t *) stbi_load(filename, &(texture->width), &(texture->height), NULL, STBI_rgb_alpha);
 
     // Make sure the texture cache is reloaded
     sceKernelDcacheWritebackInvalidateAll();
@@ -161,4 +161,4 @@ int main() {
     free(texture);
 
     return 0;
-}
+}