Merge pull request #108 from jrmaddison/jrmaddison/sliding_law_fix

Fix ssa_solver.sliding_law

Author: dngoldberg

fenics_ice/solver.py

@@ -516,8 +516,10 @@ def sliding_law(self, alpha, U):
 
             else:
                 raise RuntimeError(f"Invalid sliding law: '{sl:s}'")
+        else:
+            raise RuntimeError(f"Invalid sliding law: '{sl:s}'")
 
-            return B2
+        return B2
 
     def solve_mom_eq(self, annotate_flag=None):
         """Solve the momentum equation defined in def_mom_eq"""