Adapt error bound of stokes example

CI (no -ffast-math) produces a slightly relaxed error.

Adapt error bound of stokes example
d5806fe3 · Dominic Kempf · 14d683a3 · d5806fe3
Commit d5806fe3 authored 6 years ago by Dominic Kempf
--- a/test/stokes/stokes.mini
+++ b/test/stokes/stokes.mini
@@ -13,7 +13,7 @@ reference = hagenpoiseuille_ref
 extension = vtu
 [formcompiler]
-compare_l2errorsquared = 1e-11
+compare_l2errorsquared = 1e-10
 [formcompiler.r]
 numerical_jacobian = 0, 1 | expand num