Fix #427: Recursive DoCommandP call issuing CMD_DECLINE_BUY_COMPANY

Ignore shift and pause states for CMD_DECLINE_BUY_COMPANY command

src/command.cpp

@@ -391,7 +391,7 @@ static const Command _command_proc_table[] = {
 	DEF_CMD(CmdBuyShareInCompany,                              0, CMDT_MONEY_MANAGEMENT      ), // CMD_BUY_SHARE_IN_COMPANY
 	DEF_CMD(CmdSellShareInCompany,                             0, CMDT_MONEY_MANAGEMENT      ), // CMD_SELL_SHARE_IN_COMPANY
 	DEF_CMD(CmdBuyCompany,                                     0, CMDT_MONEY_MANAGEMENT      ), // CMD_BUY_COMPANY
-	DEF_CMD(CmdDeclineBuyCompany,                              0, CMDT_MONEY_MANAGEMENT      ), // CMD_DECLINE_BUY_COMPANY
+	DEF_CMD(CmdDeclineBuyCompany,                              0, CMDT_SERVER_SETTING        ), // CMD_DECLINE_BUY_COMPANY
 
 	DEF_CMD(CmdFoundTown,                CMD_DEITY | CMD_NO_TEST, CMDT_LANDSCAPE_CONSTRUCTION), // CMD_FOUND_TOWN; founding random town can fail only in exec run
 	DEF_CMD(CmdRenameTown,                CMD_DEITY | CMD_SERVER, CMDT_OTHER_MANAGEMENT      ), // CMD_RENAME_TOWN

src/company_gui.cpp

@@ -2892,7 +2892,7 @@ struct BuyCompanyWindow : Window {
 	{
 		const Company *c = Company::GetIfValid((CompanyID)this->window_number);
 		if (c != nullptr && HasBit(c->bankrupt_asked, this->owner)) {
-			DoCommandP(0, this->window_number, 0, CMD_DECLINE_BUY_COMPANY);
+			EnqueueDoCommandP(NewCommandContainerBasic(0, this->window_number, 0, CMD_DECLINE_BUY_COMPANY | CMD_NO_SHIFT_ESTIMATE));
 		}
 	}