Fix clang-tidy hicpp-use-emplace warnings in args parsing

src/main.cpp

@@ -243,10 +243,10 @@ static std::vector<std::vector<std::string>> get_params(int argc, char* argv[])
 			if ((arg.size() > 2) && (arg[0] == '-') && (arg[1] == '-')) {
 				// Store the parameter name without the "--" prefix
 				arg.remove_prefix(2);
-				args.emplace_back(std::vector<std::string>(1, std::string(arg)));
+				args.emplace_back().emplace_back(arg);
 			}
 			else if (!args.empty()) {
-				args.back().emplace_back(std::string(arg));
+				args.back().emplace_back(arg);
 			}
 		}
 

src/util.cpp

@@ -1073,7 +1073,7 @@ std::vector<std::vector<std::string>> parse_config(const std::string& file_name)
 				case BEFORE_NAME:
 					if (is_alpha(c)) {
 						state = NAME;
-						args.emplace_back(std::vector<std::string>(1, std::string(1, c)));
+						args.emplace_back().emplace_back(1, c);
 					}
 					else if (c == '#') {
 						state = COMMENT;
@@ -1103,10 +1103,10 @@ std::vector<std::vector<std::string>> parse_config(const std::string& file_name)
 						state = VALUE;
 						quoted = (c == '"');
 						if (quoted) {
-							args.back().emplace_back(std::string());
+							args.back().emplace_back();
 						}
 						else {
-							args.back().emplace_back(std::string(1, c));
+							args.back().emplace_back(1, c);
 						}
 					}
 					break;