Make Escape exit msaa test
diff --git a/tests/msaa.c b/tests/msaa.c
index ab697c6..6330838 100644
--- a/tests/msaa.c
+++ b/tests/msaa.c
@@ -84,6 +84,9 @@
         case GLFW_KEY_SPACE:
             glfwSetTime(0.0);
             break;
+        case GLFW_KEY_ESCAPE:
+            glfwSetWindowShouldClose(window, GLFW_TRUE);
+            break;
     }
 }