Re-activate the basic exact Riemann solver check.

c89526be · Matthieu Schaller · 36e3c98a · c89526be
Commit c89526be authored Apr 15, 2018 by Matthieu Schaller
--- a/tests/testRiemannExact.c
+++ b/tests/testRiemannExact.c
@@ -406,7 +406,7 @@ int main() {
  srand(seed);

  /* check the exact Riemann solver */
-  // check_riemann_exact();
+  check_riemann_exact();

  /* symmetry test */
  for (int i = 0; i < 100000; ++i) {