message: Fix int to bool warnings
diff: @@ -560,7 +560,7 @@ void TraceLoader::init( int argc, char **argv )
  }
  #endif
  - imgui_set_custom_style( get_opt( OPT_DarkTheme ), get_optf( OPT_ThemeAlpha ) );
  + imgui_set_custom_style( !!get_opt( OPT_DarkTheme ), get_optf( OPT_ThemeAlpha ) );
  logf( "Welcome to gpuvis\n" );
  @@ -2561,7 +2561,7 @@ void TraceLoader::render_color_picker()
  if ( changed )
  {
  - imgui_set_custom_style( get_opt( OPT_DarkTheme ), get_optf( OPT_ThemeAlpha ) );
  + imgui_set_custom_style( !!get_opt( OPT_DarkTheme ), get_optf( OPT_ThemeAlpha ) );
  }
  }
  