MAINT-810 Fix for crash in LLRenderTarget when exiting wireframe render mode after resizing window.

indra/newview/llviewermenu.cpp

@@ -88,6 +88,7 @@
 #include "lltoolpie.h"
 #include "lltoolselectland.h"
 #include "lltrans.h"
+#include "llviewerdisplay.h" //for gWindowResized
 #include "llviewergenericmessage.h"
 #include "llviewerhelp.h"
 #include "llviewermenufile.h"	// init_menu_file()
@@ -1113,6 +1114,7 @@ class LLAdvancedToggleWireframe : public view_listener_t
 	bool handleEvent(const LLSD& userdata)
 	{
 		gUseWireframe = !(gUseWireframe);
+		gWindowResized = TRUE;
 		LLPipeline::updateRenderDeferred();
 		gPipeline.resetVertexBuffers();
 		return true;