YAJIT: error message for sqrts as optional argument to integrate

[Juergen Reuter]

When sqrts is given as optional argument to the integrate command, WHIZARD 2.2 does integrate, but spits out an error message:

| Beam data (collision):
|   e-  (mass = 5.1099700E-04 GeV)
|   e+  (mass = 5.1099700E-04 GeV)
|   sqrts = 9.300000000000E+01 GeV
| Phase space: generating configuration ...
| Phase space: ... success.
| Phase space: writing configuration file 'born_i1.phs'
| Phase space: 2 channels, 2 dimensions
| Phase space: found 2 channels, collected in 2 groves.
| Phase space: Using 2 equivalences between channels.
| Phase space: wood
| Applying user-defined cuts.
| Starting integration for process 'born'
| Integrator: 2 chains, 2 channels, 2 dimensions
| Integrator: Using VAMP channel equivalences
| Integrator: 2000 initial calls, 20 bins, stratified = T
| Integrator: VAMP
|=============================================================================|
| It      Calls  Integral[fb]  Error[fb]   Err[%]    Acc  Eff[%]   Chi2 N[It] |
|=============================================================================|
   1       1600  6.7216512E+05  2.46E+03    0.37    0.15*  53.27
|-----------------------------------------------------------------------------|
   1       1600  6.7216512E+05  2.46E+03    0.37    0.15   53.27
|=============================================================================|
| Time estimate for generating 10000 events: 0d:00h:00m:07s
| Creating integration history display born-history.ps and born-history.pdf
+  IDENTIFIER  <variable>  = sqrts
******************************************************************************
*** ERROR: This variable is undefined at this point
******************************************************************************

[Juergen Reuter]

OMG, another fake ticket triggered by debugging. I stop for this weekend.