Fix NeL GUI compile under MinGW

code/nel/src/gui/lua_object.cpp

@@ -362,7 +362,7 @@ namespace NLGUI
 	{
 		nlassert(key);
 		nlassert(isValid());
-		if (!isTable()) throw ELuaNotATable(NLMISC::toString("Trying to set a function value '%p' at key %s on object '%s' of type %s (not a table).", value, key, getId().c_str(), getTypename()));
+		if (!isTable()) throw ELuaNotATable(NLMISC::toString("Trying to set a function value '%p' at key %s on object '%s' of type %s (not a table).", (void *)value, key, getId().c_str(), getTypename()));
 		CLuaStackChecker lsc(_LuaState);
 		push();
 		_LuaState->push(key);

code/nel/src/gui/stdpch.h

@@ -30,7 +30,9 @@
 #include "nel/misc/hierarchical_timer.h"
 
 #ifdef NL_OS_WINDOWS
-	#define NOMINMAX
+	#ifndef NL_COMP_MINGW
+	#	define NOMINMAX
+	#endif
 	#include <WinSock2.h>
 	#include <windows.h>
 #endif