[uri] Add uri_has_path()

Signed-off-by: Michael Brown <mcb30@ipxe.org>

src/include/ipxe/uri.h

 	return ( uri->scheme != NULL );
 }
 
+/**
+ * URI has a path
+ *
+ * @v uri			URI
+ * @ret has_path		URI has a path
+ */
+static inline int uri_has_path ( struct uri *uri ) {
+	return ( uri->path && ( uri->path[0] != '\0' ) );
+}
+
 /**
  * URI has an absolute path
  *