Fixed lua error usage

Author: thegrb93

source/socket.cpp

@@ -7,6 +7,7 @@ int parseWhitelist(GarrysMod::Lua::ILuaBase* LUA);
 GMOD_MODULE_OPEN( )
 {
 	#ifdef USE_WHITELIST
+	// This might long-jump via lua error so watch out!
 	if (parseWhitelist(LUA))
 	{
 		return 0;

source/whitelist.cpp

@@ -14,31 +14,33 @@ std::vector<std::pair<std::string, std::string> > whitelist;
 
 int parseWhitelist(GarrysMod::Lua::ILuaBase* LUA)
 {
-	std::ifstream input(whitelistDir);
-	if(input)
 	{
-		std::stringstream filereader;
-		filereader << input.rdbuf();
-		std::string filedata = filereader.str();
-		std::regex line_parser("([\\w\\.-]+)\\s+(\\d+)(?:(?:\r?\n)+|$)");
-		for (std::regex_iterator<std::string::iterator> match = std::regex_iterator(filedata.begin(), filedata.end(), line_parser), end = std::regex_iterator<std::string::iterator>(); match != end; ++match)
+		std::ifstream input(whitelistDir);
+		if (input)
 		{
-			whitelist.push_back(std::pair<std::string, std::string>(match->operator[](1).str(), match->operator[](2).str()));
+			std::stringstream filereader;
+			filereader << input.rdbuf();
+			std::string filedata = filereader.str();
+			std::regex line_parser("([\\w\\.-]+)\\s+(\\d+)(?:(?:\r?\n)+|$)");
+			for (std::regex_iterator<std::string::iterator> match = std::regex_iterator(filedata.begin(), filedata.end(), line_parser), end = std::regex_iterator<std::string::iterator>(); match != end; ++match)
+			{
+				whitelist.push_back(std::pair<std::string, std::string>(match->operator[](1).str(), match->operator[](2).str()));
+			}
+			if (whitelist.empty())
+			{
+				goto no_entries_error;
+			}
 		}
-		if (whitelist.empty())
+		else
 		{
-			LUA->PushString("Didn't find any valid entries in whitelist file!");
-			LUA->Error();
-			return 1;
+			goto cant_read_error;
 		}
+		return 0;
 	}
-	else
-	{
-		LUA->PushString("Failed to read whitelist file!");
-		LUA->Error();
-		return 1;
-	}
-	return 0;
+no_entries_error:
+	LUA->ThrowError("Didn't find any valid entries in whitelist file!");
+cant_read_error:
+	LUA->ThrowError("Failed to read whitelist file!");
 }
 
 bool isSafe(const char* pNodeName, const char* pServiceName)