add missing braces.

opm/core/simulator/AdaptiveTimeStepping_impl.hpp

@@ -245,12 +245,12 @@ namespace Opm {
                 const double newTimeStep = restart_factor_ * dt;
                 // we need to revise this
                 substepTimer.provideTimeStepEstimate( newTimeStep );
-                if( solver_verbose_ )
+                if( solver_verbose_ ) {
                     std::string msg;
                     msg = "Solver convergence failed, restarting solver with new time step ("
                         + std::to_string(unit::convert::to( newTimeStep, unit::day )) + " days).\n";
                     OpmLog::error(msg);
-
+		}
                 // reset states
                 state      = last_state;
                 well_state = last_well_state;