patch 8.2.1715: Motif GUI: commented out code missed {}

Problem:    Motif GUI: commented out code missed {}.
Solution:   Add {} and reenable the code. (similar to #6989)

src/gui_motif.c

@@ -1242,11 +1242,11 @@ add_pixmap_args(vimmenu_T *menu, Arg *args, int n)
     }
     else
     {
-# if 0  // DISABLED - this causes a crash when running "make test_gui" in
 	// Test_colorscheme()
 	if (menu->xpm_fname != NULL)
+	{
 	    XtSetArg(args[n], XmNpixmapFile, menu->xpm_fname); n++;
-# endif
+	}
 	XtSetArg(args[n], XmNpixmapData, menu->xpm); n++;
 	XtSetArg(args[n], XmNlabelLocation, XmBOTTOM); n++;
     }

src/version.c

@@ -750,6 +750,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    1715,
 /**/
     1714,
 /**/