Fix memory leak in Windows's jawtrenderer.

src/native/jawtrenderer/JAWTRenderer_Windows.cpp

@@ -36,17 +36,22 @@ void JAWTRenderer_close
     if(blitter->surface)
     {
         delete blitter->surface;
+        blitter->surface = NULL;
     }
 
     if(blitter->device)
     {
         delete blitter->device;
+        blitter->device = NULL;
     }
 
     if(blitter->d3d)
     {
         delete blitter->d3d;
+        blitter->d3d = NULL;
     }
+
+    delete blitter;
 }
 
 jlong JAWTRenderer_open(JNIEnv *jniEnv, jclass clazz, jobject component)

src/native/jawtrenderer/windows/d3d_device.cpp

@@ -70,15 +70,15 @@ D3DDevice::D3DDevice(HWND hwnd, LPDIRECT3D9 d3d, size_t width, size_t height,
 
 D3DDevice::~D3DDevice()
 {
-    if(m_device)
+    if(m_backSurface)
     {
-        m_device->Release();
-        m_device = NULL;
+        m_backSurface->Release();
     }
 
-    if(m_backSurface)
+    if(m_device)
     {
-        m_backSurface->Release();
+        m_device->Release();
+        m_device = NULL;
     }
 }
 
@@ -185,7 +185,7 @@ void D3DDevice::render(D3DSurface* surface)
     /* copy content on surface */
     m_device->UpdateSurface(surfacePointer, NULL, m_backSurface, NULL);
 
-    /* finish scence and cleanup */
+    /* finish scene and cleanup */
     m_device->EndScene();
     m_backSurface->Release();
     m_backSurface = NULL;