Fix Preset List with no customs available (#5535)

* Surround preset file processing with the fs::exists check rather than returning early.

* clang

soh/soh/Enhancements/Presets/Presets.cpp

@@ -193,12 +193,10 @@ void ParsePreset(nlohmann::json& json, std::string name) {
 }
 
 void LoadPresets() {
-    if (!fs::exists(presetFolder)) {
-        return;
-    }
     if (!presets.empty()) {
         presets.clear();
     }
+    if (fs::exists(presetFolder)) {
         for (auto const& preset : fs::directory_iterator(presetFolder)) {
             std::ifstream ifs(preset.path());
 
@@ -211,6 +209,7 @@ void LoadPresets() {
             }
             ifs.close();
         }
+    }
     auto initData = std::make_shared<Ship::ResourceInitData>();
     initData->Format = RESOURCE_FORMAT_BINARY;
     initData->Type = static_cast<uint32_t>(Ship::ResourceType::Json);