Fix a very old bug in the implementation of the
gummel-poon model formulas for the junction capacities.
(already in spice3f4)
For unknown reasons, the same formulas in the
diode mos1 mos2 mos6 jfet models
have been implemented correctly right from the beginning,
the typo was bjt specific.
Many Thanks for the concise and precise Bug Report
provided by Schabo Rumanus on the ngspice-users mailing list
> To: ngspice-users@lists.sourceforge.net
> Subject: [Ngspice-users] Temperatursimulation von Sperrschichtkapazitäten
Many Thanks to Dietmar Warning for his thorough verification
of this commit.