Update emscripten version

src/render/ShadowMap.cpp

@@ -1,4 +1,4 @@
-#include "ShadowMap.h"
+#include "ShadowMap.h"
 #include "Environment.h"
 #include <iostream>
 #include <cmath>
@@ -56,7 +56,7 @@ namespace FRG {
     {
         glGenFramebuffers(1, &fbo);
 
-#if defined(EMSCRIPTEN) || defined(__ANDROID__)
+#if defined(__EMSCRIPTEN__) || defined(__ANDROID__)
         glGenTextures(1, &depthTexture);
         glBindTexture(GL_TEXTURE_2D, depthTexture);
 
@@ -87,7 +87,7 @@ namespace FRG {
                                GL_TEXTURE_2D, depthTexture, 0);
 
         // No color buffer for this FBO — depth only.
-#if defined(EMSCRIPTEN) || defined(__ANDROID__)
+#if defined(__EMSCRIPTEN__) || defined(__ANDROID__)
         GLenum drawBuffers[] = { GL_NONE };
         glDrawBuffers(1, drawBuffers);
 #else