Added missing resource release in test source.

src/test/SDL_test_common.c

@@ -1424,6 +1424,14 @@ SDLTest_CommonQuit(SDLTest_CommonState * state)
         }
         SDL_free(state->renderers);
     }
+    if (state->targets) {
+        for (i = 0; i < state->num_windows; ++i) {
+            if (state->targets[i]) {
+                SDL_DestroyTexture(state->targets[i]);
+            }
+        }
+        SDL_free(state->targets);
+    }
     if (state->flags & SDL_INIT_VIDEO) {
         SDL_VideoQuit();
     }