Use writeBinary method from dune-matrix-vector

src/harmonicmaps.cc

@@ -274,7 +274,7 @@ int main (int argc, char *argv[]) try
 
     // Write the corresponding coefficient vector: verbatim in binary, to be completely lossless
     std::ofstream outFile(baseName + ".data", std::ios_base::binary);
-    GenericVector::writeBinary(outFile, xEmbedded);
+    MatrixVector::Generic::writeBinary(outFile, xEmbedded);
     outFile.close();
 
     return 0;