Change minor things without effect in solver.py

src/solver.py

-# pylint: disable=invalid-name
+# pylint: disable=invalid-name,too-many-lines
 
 """
 Solver module, contains the Solver class.
@@ -321,6 +321,15 @@ class Solver:
             (p, u, sigma) = df.TrialFunctions(w_stress)
             (q, v, psi) = df.TestFunctions(w_stress)
 
+        # Setup source functions
+        f_heat = self.heat_source
+        f_mass = self.mass_source
+
+        if self.mode == "r13":
+            cpl = 1.0
+        else:
+            cpl = 0.0
+
         # Setup projections
         s_n = df.dot(s, n)
         r_n = df.dot(r, n)
@@ -333,15 +342,6 @@ class Solver:
         sigma_nt = df.dot(sigma*n, t)
         psi_nt = df.dot(psi*n, t)
 
-        # Setup source functions
-        f_heat = self.heat_source
-        f_mass = self.mass_source
-
-        if self.mode == "r13":
-            cpl = 1.0
-        else:
-            cpl = 0.0
-
         # Sub functionals:
         def b(scalar, vector):
             return 1 * scalar * df.div(vector) * df.dx