update examples missing unloadtexture (#4234)

examples/models/models_yaw_pitch_roll.c

@@ -114,6 +114,7 @@ int main(void)
     // De-Initialization
     //--------------------------------------------------------------------------------------
     UnloadModel(model);     // Unload model data
+    UnloadTexture(texture); // Unload texture data
 
     CloseWindow();          // Close window and OpenGL context
     //--------------------------------------------------------------------------------------

examples/shaders/shaders_lightmap.c

@@ -164,6 +164,8 @@ int main(void)
     //--------------------------------------------------------------------------------------
     UnloadMesh(mesh);       // Unload the mesh
     UnloadShader(shader);   // Unload shader
+    UnloadTexture(texture); // Unload texture
+    UnloadTexture(light);   // Unload texture
 
     CloseWindow();          // Close window and OpenGL context
     //--------------------------------------------------------------------------------------

examples/shaders/shaders_texture_drawing.c

@@ -77,6 +77,7 @@ int main(void)
     // De-Initialization
     //--------------------------------------------------------------------------------------
     UnloadShader(shader);
+    UnloadTexture(texture);
 
     CloseWindow();        // Close window and OpenGL context
     //--------------------------------------------------------------------------------------

examples/shaders/shaders_vertex_displacement.c

@@ -110,6 +110,7 @@ int main(void)
     //--------------------------------------------------------------------------------------
     UnloadShader(shader);
     UnloadModel(planeModel);
+    UnloadTexture(perlinNoiseMap);
 
     CloseWindow();        // Close window and OpenGL context
     //--------------------------------------------------------------------------------------