Bug fixes

Fix compile error on MacOS.
Speed up generation of Clash configuration.

misc.cpp

@@ -759,13 +759,6 @@ void shortDisassemble(int source, unsigned short &num_a, unsigned short &num_b)
     num_b = (unsigned short)(source >> 16);
 }
 
-std::string to_string(const YAML::Node &node)
-{
-    std::stringstream ss;
-    ss << node;
-    return ss.str();
-}
-
 int to_int(std::string &s, int def_vaule)
 {
     int retval = 0;

misc.h

@@ -51,7 +51,6 @@ void urlParse(std::string url, std::string &host, std::string &path, int &port,
 void removeUTF8BOM(std::string &data);
 int shortAssemble(unsigned short num_a, unsigned short num_b);
 void shortDisassemble(int source, unsigned short &num_a, unsigned short &num_b);
-std::string to_string(const YAML::Node &node);
 int to_int(std::string &s, int def_vaule = 0);
 
 std::string fileGet(std::string path, bool binary = true);

subexport.cpp

@@ -585,7 +585,7 @@ std::string netchToClash(std::vector<nodeInfo> &nodes, std::string &base_conf, s
 
     rulesetToClash(yamlnode, ruleset_content_array);
 
-    return to_string(yamlnode);
+    return YAML::Dump(yamlnode);
 }
 
 std::string netchToSurge(std::vector<nodeInfo> &nodes, std::string &base_conf, std::vector<ruleset_content> &ruleset_content_array, string_array &extra_proxy_group, int surge_ver, extra_settings &ext)

webserver_libevent.cpp

@@ -2,7 +2,9 @@
 #include <cstdint>
 #include <iostream>
 #include <evhttp.h>
+#ifdef MALLOC_TRIM
 #include <malloc.h>
+#endif // MALLOC_TRIM
 
 #include <string>
 #include <vector>