message: Fix GL shader insertion
  A missing \n was triggering a compile error for example :
  #extension GL_ARB_shader_storage_buffer_object : require#define SHADER_RESTYPE 1
  #define UINT_TEX 0
diff: @@ -440,7 +440,7 @@ void GLReplay::InitDebugData()
  {
  extensions =
  "#extension GL_ARB_compute_shader : require\n"
  - "#extension GL_ARB_shader_storage_buffer_object : require";
  + "#extension GL_ARB_shader_storage_buffer_object : require\n";
  }
  if(HasExt[ARB_compute_shader] && HasExt[ARB_shader_storage_buffer_object])
  