kconv is not a fit parameter, but a generic curve parameter

pub/lib/olf.cpp

@@ -127,10 +127,10 @@ void COlc::copy_meta_C_from_other( const COlc* other )
     copy_meta_O_from_other( other );
     expr = other->expr;
     T = other->T;
+    kconv = other->kconv;
     nP = other->nP;
     PCo = other->PCo;
     kd = other->kd;
-    kconv = other->kconv;
     weighing = other->weighing;
     plot_to_grid = other->plot_to_grid;
     range_expr = other->range_expr;

pub/lib/olf.hpp

@@ -93,6 +93,7 @@ class COlc : public COlo {
     enum TScrInp { _STDIN, _CMDLIN } scrInpMode; ///< Where pars are read from
     string expr;                ///< The curve's definition (input expression).
     RNode T;                    ///< The curve's definition (parsed tree).
+    int kconv;                  ///< Index of resolution file to convolve with.
     int nP;                     ///< Number of parameters.
 
     // Refined description:
@@ -100,7 +101,6 @@ class COlc : public COlo {
 
     // Fitting:
     int           kd;           ///< Index of data file to be fitted.
-    int           kconv;        ///< Index of resolution file to convolve with.
     enum TWgt { _LIN, _LOG, _VAR, _VARC, _VARD, _LAST_TWGT=_VARD }
                   weighing;     ///< Weight mode for fitting.
     static string wgtNames[];
@@ -111,7 +111,7 @@ class COlc : public COlo {
     double        chi2;         ///< Global chi^2
 
     COlc() :
-        COlo(), evaMode(_EXPR), scrInpMode(_STDIN), kd(-1), kconv(-1), weighing( _VAR ),
+        COlo(), evaMode(_EXPR), scrInpMode(_STDIN), kconv(-1), kd(-1), weighing( _VAR ),
         plot_to_grid( false ), range_expr(""), chi2(0) {}
 
     // Functions that exist similarly for COld and COlc: