Fix issue 44: self referenced ns
Fix issue 44: self referenced ns

This fix the issue where a node using a namespace declared inside its body could
cause an infinite loop.

sartura/libroxml,sartura/libroxml,mahmudur85/libroxml,gergap/libroxml,mahmudur85/libroxml,mahmudur85/libroxml,sartura/libroxml,mahmudur85/libroxml,mahmudur85/libroxml,gergap/libroxml,gergap/libroxml,gergap/libroxml,sartura/libroxml,gergap/libroxml,sartura/libroxml