Don't return a bool from PluginLoader::Load().

It never returns false, so there's no point returning true.

src/backend/plugin/plugin.cpp

@@ -233,7 +233,8 @@ namespace loot {
 
         try {
             PluginLoader loader;
-            return loader.Load(game, name, true, true);
+            loader.Load(game, name, true, true);
+            return true;
         }
         catch (std::exception& /*e*/) {
             BOOST_LOG_TRIVIAL(warning) << "The .es(p|m) file \"" << name << "\" is not a valid plugin.";

src/backend/plugin/plugin_loader.cpp

@@ -38,7 +38,10 @@ using namespace std;
 namespace loot {
     PluginLoader::PluginLoader() : _isEmpty(true), _isMaster(false), _crc(0) {}
 
-    bool PluginLoader::Load(const Game& game, const std::string& name, const bool headerOnly, const bool checkValidityOnly) {
+    void PluginLoader::Load(const Game& game,
+                            const std::string& name,
+                            const bool headerOnly,
+                            const bool checkValidityOnly) {
         espm::File * file = nullptr;
         espm::Settings espmSettings;
 
@@ -71,7 +74,7 @@ namespace loot {
             // If only wanting to test for valid parsing, quit now.
             if (checkValidityOnly) {
                 delete file;
-                return true;
+                return;
             }
 
             BOOST_LOG_TRIVIAL(trace) << filepath.filename() << ": " << "Checking master flag.";
@@ -116,7 +119,6 @@ namespace loot {
         }
 
         BOOST_LOG_TRIVIAL(trace) << name << ": " << "Plugin loading complete.";
-        return true;
     }
 
     bool PluginLoader::IsEmpty() const {

src/backend/plugin/plugin_loader.h

@@ -38,7 +38,10 @@ namespace loot {
     public:
         PluginLoader();
 
-        bool Load(const Game& game, const std::string& name, const bool headerOnly, const bool checkValidityOnly);
+        void Load(const Game& game,
+                  const std::string& name,
+                  const bool headerOnly,
+                  const bool checkValidityOnly);
 
         bool IsEmpty() const;
         bool IsMaster() const;  //Checks master bit flag.