Correct element size, if block type or variable name is wider than block width.
Previously, if size corrected, element changed position to the right (or down, if height is corrected). Now upper-left corner is fixed.

                  <xsd:element name="Generic">
                    <xsd:complexType>
                      %(toolchain_makefile)s
                    </xsd:complexType>
                  </xsd:element>