Update DynamicLibraryManager.cpp

Author: mcbarton

lib/Interpreter/DynamicLibraryManager.cpp

@@ -54,7 +54,7 @@ namespace Cpp {
     for (const char* Var : kSysLibraryEnv) {
       char* Env = nullptr;
       size_t sz = 0;
-      if (_dupenv_s(&Env, &sz, Var) == 0 && buf != nullptr) {
+      if (_dupenv_s(&Env, &sz, Var) == 0 && Env != nullptr) {
         SmallVector<StringRef, 10> CurPaths;
         SplitPaths(Env, CurPaths, utils::kPruneNonExistant, Cpp::utils::platform::kEnvDelim);
         for (const auto& Path : CurPaths)