Fix using NXT_PLATFORM without including Platform.h
diff --git a/src/utils/OpenGLBinding.cpp b/src/utils/OpenGLBinding.cpp
index c2f67b6..b7b5317 100644
--- a/src/utils/OpenGLBinding.cpp
+++ b/src/utils/OpenGLBinding.cpp
@@ -14,6 +14,8 @@
 
 #include "utils/BackendBinding.h"
 
+#include "common/Platform.h"
+
 #include "GLFW/glfw3.h"
 
 namespace backend {