fix for debian

contrib/Netgen/libsrc/general/array.hpp

@@ -371,7 +371,7 @@ namespace netgen
     /// array copy
     ArrayMem & operator= (const FlatArray<T> & a2)
     {
-      SetSize (a2.Size());
+      this->SetSize (a2.Size());
       for (int i = 0; i < size; i++)
 	(*this)[i] = a2[i];
       return *this;