Fix bluegl-gen.py

The comment about MSVC was not properly escaping backslash
sequences, eating some of the comment and generating an
interpreter error on \u.

libs/bluegl/bluegl-gen.py

@@ -57,8 +57,8 @@ def generateHeader(api, functions, include_dir, output_dir):
         # special case for GL_GLEXT_PROTOTYPES
         if 'GL_GLEXT_PROTOTYPES' in defines:
             headers += '''
-// MSVC includes .../Windows Kits\10\Include\10.0.17763.0\um\GL/gl.h, with gl APIs conflicting with
-// bluegl\include\GL/glcorearb.h, causing errors for OpenGL APIs such as:
+// MSVC includes .../Windows Kits\\10\\Include\\10.0.17763.0\\um\GL/gl.h, with gl APIs conflicting with
+// bluegl\\include\\GL/glcorearb.h, causing errors for OpenGL APIs such as:
 // error C2375:  'glBindTexture': redefinition; different linkage
 #ifndef FILAMENT_PLATFORM_WGL
     #define GL_GLEXT_PROTOTYPES 1

libs/bluegl/include/bluegl/BlueGL.h

@@ -23,7 +23,7 @@
 #define TNT_FILAMENT_BLUEGL__H
 
 
-// MSVC includes .../Windows Kits\Include.0.17763.0\um\GL/gl.h, with gl APIs conflicting with
+// MSVC includes .../Windows Kits\10\Include\10.0.17763.0\um\GL/gl.h, with gl APIs conflicting with
 // bluegl\include\GL/glcorearb.h, causing errors for OpenGL APIs such as:
 // error C2375:  'glBindTexture': redefinition; different linkage
 #ifndef FILAMENT_PLATFORM_WGL