switch from default to custom bisection solver, default causes issues for...

switch from default to custom bisection solver, default causes issues for initial linear problem for a

dune/tectonic/spatial-solving/tnnmg/linesearchsolver.hh

@@ -41,7 +41,7 @@ class LineSearchSolver
     }
 
     int bisectionsteps = 0;
-    const Bisection globalBisection; //(0.0, 1.0, 0.0, 0.0);
+    const Bisection globalBisection(0.0, 1.0, 0.0, 0.0);
 
     x = globalBisection.minimize(f, f.scaling(), 0.0, bisectionsteps);
     //std::cout << "x: " << x << "scaling: " << f.scaling();