Merge branch 'bugfix_bracket' into 'master'

added missing brackets

See merge request tpurcell/cpp_sisso!52

tests/googletest/test_main.cpp

@@ -26,7 +26,7 @@ int main(int argc, char** argv)
         delete listeners.Release(listeners.default_result_printer());
     }
     int result = RUN_ALL_TESTS();
-    mpi_setup::finalize_mpi_env;
+    mpi_setup::finalize_mpi_env();
 
     return result;
 }