Simplify conditions to not test "== true" or "== false"

Use the left-hand side as a condition

dune/istl/novlpschwarz.hh

@@ -132,7 +132,7 @@ namespace Dune {
       // at the beginning make a multimap "bordercontribution".
       // process has i and j as border dofs but is not the owner
       // => only contribute to Ax if i,j is in bordercontribution
-      if (buildcomm == true) {
+      if (buildcomm) {
 
         // set up mask vector
         if (mask.size()!=static_cast<typename std::vector<double>::size_type>(x.size())) {
@@ -188,7 +188,7 @@ namespace Dune {
                         flag = false;
                         continue;
                       }
-                  if (flag == false)
+                  if (!flag)
                     continue;
                 }
                 // don´t contribute to Ax if
@@ -198,7 +198,7 @@ namespace Dune {
                 // as interor/border dofs
                 // if the owner of j does not have i as interior/border dof,
                 // it will not be taken into account
-                if (flag==true)
+                if (flag)
                   bordercontribution.insert(std::pair<int,int>(i.index(),j.index()));
               }
             }

dune/istl/owneroverlapcopy.hh

@@ -656,17 +656,17 @@ namespace Dune {
       if (OwnerCopyToOwnerCopyInterfaceBuilt) OwnerCopyToOwnerCopyInterface.free();
       if (CopyToAllInterfaceBuilt) CopyToAllInterface.free();
       if (globalLookup_) delete globalLookup_;
-      if (freecomm==true)
-        if(comm!=MPI_COMM_NULL)
-        {
-          // If it is possible to query whether MPI_Finalize
-          // was called, only free the communicator before
-          // calling MPI_Finalize.
-          int wasFinalized = 0;
-          MPI_Finalized( &wasFinalized );
-          if(!wasFinalized)
-            MPI_Comm_free(&comm);
+      if (freecomm && (comm != MPI_COMM_NULL))
+      {
+        // If it is possible to query whether MPI_Finalize
+        // was called, only free the communicator before
+        // calling MPI_Finalize.
+        int wasFinalized = 0;
+        MPI_Finalized(&wasFinalized);
+        if (!wasFinalized) {
+          MPI_Comm_free(&comm);
         }
+      }
     }
 
   private: