Fix build on gcc 4.9

http://hydra.nixos.org/build/52408843

2 files changed, 6 insertions, 3 deletions

diff --git a/src/libutil/config.cc b/src/libutil/config.cc
index 497afaa1fe..f7a46bfee6 100644
--- a/src/libutil/config.cc
+++ b/src/libutil/config.cc
@@ -15,9 +15,9 @@ void Config::set(const std::string & name, const std::string & value)
 
 void Config::addSetting(AbstractSetting * setting)
 {
-    _settings.emplace(setting->name, Config::SettingData{false, setting});
+    _settings.emplace(setting->name, Config::SettingData(false, setting));
     for (auto & alias : setting->aliases)
-        _settings.emplace(alias, Config::SettingData{true, setting});
+        _settings.emplace(alias, Config::SettingData(true, setting));
 
     bool set = false;
 
diff --git a/src/libutil/config.hh b/src/libutil/config.hh
index 9196210910..77620d47d3 100644
--- a/src/libutil/config.hh
+++ b/src/libutil/config.hh
@@ -33,8 +33,11 @@ class Config
 
     struct SettingData
     {
-        bool isAlias = false;
+        bool isAlias;
         AbstractSetting * setting;
+        SettingData(bool isAlias, AbstractSetting * setting)
+            : isAlias(isAlias), setting(setting)
+        { }
     };
 
     std::map<std::string, SettingData> _settings;