(svn r26656) -Fix [FS#6044]: Production cheat cannot not be allowed to be active in multiplayer for desync reasons, even when activated in singleplayer previously

src/industry_gui.cpp

@@ -24,6 +24,7 @@
 #include "newgrf_industries.h"
 #include "newgrf_text.h"
 #include "newgrf_debug.h"
+#include "network/network.h"
 #include "strings_func.h"
 #include "company_func.h"
 #include "tilehighlight_func.h"
@@ -639,7 +640,8 @@ static inline bool IsProductionAlterable(const Industry *i)
 {
 	const IndustrySpec *is = GetIndustrySpec(i->type);
 	return ((_game_mode == GM_EDITOR || _cheats.setup_prod.value) &&
-			(is->production_rate[0] != 0 || is->production_rate[1] != 0 || is->IsRawIndustry()));
+			(is->production_rate[0] != 0 || is->production_rate[1] != 0 || is->IsRawIndustry()) &&
+			!_networking);
 }
 
 class IndustryViewWindow : public Window