Update cursor test tracking when enabling cursor

Related to #1461.
diff --git a/tests/cursor.c b/tests/cursor.c
index 7001d6e..0e6faea 100644
--- a/tests/cursor.c
+++ b/tests/cursor.c
@@ -181,6 +181,7 @@
 
         case GLFW_KEY_N:
             glfwSetInputMode(window, GLFW_CURSOR, GLFW_CURSOR_NORMAL);
+            glfwGetCursorPos(window, &cursor_x, &cursor_y);
             printf("(( cursor is normal ))\n");
             break;