test/cli_argument_parser: fix using delete instead of delete[] on pointer array

src/test/cli_argument_parser.cpp

@@ -154,6 +154,6 @@ int main(int argc, char* argv[]) {
     //TODO add tests for invalid input
     std::cerr << "TODO: invalid input tests" << std::endl;
 
-    delete validParameterList;
+    delete[] validParameterList;
     return 0;
 }