fix: remove try-catch blocks to support exceptions-disabled builds

Author: omghante

src/cares_wrap.cc

@@ -2179,10 +2179,8 @@ void GetServers(const FunctionCallbackInfo<Value>& args) {
       if (bracket_end != std::string::npos) {
         host = entry.substr(1, bracket_end - 1);
         if (bracket_end + 1 < entry.size() && entry[bracket_end + 1] == ':') {
-          try {
-            port = std::stoi(entry.substr(bracket_end + 2));
-          } catch (...) { /* ignore */
-          }
+          int parsed = std::atoi(entry.substr(bracket_end + 2).c_str());
+          if (parsed > 0) port = parsed;
         }
       } else {
         host = entry;  // fallback if malformed
@@ -2195,10 +2193,8 @@ void GetServers(const FunctionCallbackInfo<Value>& args) {
       auto first_colon = entry.find(':');
       if (colon != std::string::npos && colon == first_colon) {
         host = entry.substr(0, colon);
-        try {
-          port = std::stoi(entry.substr(colon + 1));
-        } catch (...) { /* ignore */
-        }
+        int parsed = std::atoi(entry.substr(colon + 1).c_str());
+        if (parsed > 0) port = parsed;
       } else {
         /* no port, or IPv6 addr without brackets */
         host = entry;