Fixing crash when passing NULL to gwinSetStyle()

docs/releases.txt

@@ -6,6 +6,7 @@
 *** Changes after 2.6 ***
 FEATURE:	Added EXC7200 driver
 FEATURE:	Added STM32F439i-EVAL board files
+FIX:		Fixed crash when passing NULL to gwinSetStyle()
 
 
 *** Release 2.6 ***

src/gwin/gwin_widget.c

@@ -588,8 +588,8 @@ void gwinSetStyle(GHandle gh, const GWidgetStyle *pstyle) {
 		return;
 
 	gw->pstyle = pstyle ? pstyle : defaultStyle;
-	gh->bgcolor = pstyle->background;
-	gh->color = pstyle->enabled.text;
+	gh->bgcolor = gw->pstyle->background;
+	gh->color = gw->pstyle->enabled.text;
 
 	_gwinUpdate(gh);
 }