Fix dom_node_set_text_content.
Fix dom_node_set_text_content.

prepare/netsurf_libdom,Achal-Aggarwal/libdom,prepare/netsurf_libdom,Achal-Aggarwal/libdom,Achal-Aggarwal/libdom,dunkelstern/libdom,dunkelstern/libdom,prepare/netsurf_libdom,dunkelstern/libdom,Achal-Aggarwal/libdom,prepare/netsurf_libdom,Achal-Aggarwal/libdom,dunkelstern/libdom,Achal-Aggarwal/libdom,dunkelstern/libdom,prepare/netsurf_libdom,dunkelstern/libdom,prepare/netsurf_libdom