init s_impl_libs in implementationList

Author: apage43

gpt4all-backend/llmodel.cpp

@@ -77,10 +77,10 @@ bool LLModel::Implementation::isImplementation(const Dlhandle &dl) {
     return dl.get<bool(uint32_t)>("is_g4a_backend_model_implementation");
 }
 
-static std::vector<std::unique_ptr<LLModel::Implementation>> s_impl_libs;
 static bool s_scanned = false;
 
 const std::vector<std::unique_ptr<LLModel::Implementation>> &LLModel::Implementation::implementationList() {
+    static std::vector<std::unique_ptr<LLModel::Implementation>> s_impl_libs;
     // NOTE: allocated on heap so we leak intentionally on exit so we have a chance to clean up the
     // individual models without the cleanup of the static list interfering
     if(!s_scanned) {