Plug memory leaks in transmission line LTRA

src/spicelib/devices/ltra/ltraext.h

@@ -41,3 +41,6 @@ extern double LTRAh3dashCoeffSetup(double*,int,double,double,double,double*,int,
 extern void LTRArcCoeffsSetup(double*,double*,double*,double*,double*,double*,int,double,double,double,double*,int,double);
 extern void LTRArlcCoeffsSetup(double*,double*,double*,double*,double*,double*,int,double,double,double,double,double*,int,double,int*);
 extern int LTRAstraightLineCheck(double,double,double,double,double,double,double,double);
+
+extern int LTRAdevDelete(GENinstance*);
+extern int LTRAmDelete(GENmodel*);

src/spicelib/devices/ltra/ltrainit.c

@@ -43,8 +43,8 @@ SPICEdev LTRAinfo = {
     .DEVacLoad = LTRAacLoad,
     .DEVaccept = LTRAaccept,
     .DEVdestroy = NULL,
-    .DEVmodDelete = NULL,
-    .DEVdelete = NULL,
+    .DEVmodDelete = LTRAmDelete,
+    .DEVdelete = LTRAdevDelete,
     .DEVsetic = NULL,
     .DEVask = LTRAask,
     .DEVmodAsk = LTRAmAsk,

src/spicelib/devices/ltra/ltraset.c

@@ -240,3 +240,31 @@ LTRAunsetup(GENmodel *inModel, CKTcircuit *ckt)
   }
   return OK;
 }
+
+int
+LTRAdevDelete(GENinstance* inst)
+{
+    LTRAinstance* here = (LTRAinstance*)inst;
+    if (here->LTRAv1)
+        tfree(here->LTRAv1);
+    if (here->LTRAi1)
+        tfree(here->LTRAi1);
+    if (here->LTRAv2)
+        tfree(here->LTRAv2);
+    if (here->LTRAi2)
+        tfree(here->LTRAi2);
+    return OK;
+}
+
+int
+LTRAmDelete(GENmodel* gen_model)
+{
+    LTRAmodel* model = (LTRAmodel*)gen_model;
+    if (model->LTRAh1dashCoeffs)
+        tfree(model->LTRAh1dashCoeffs);
+    if (model->LTRAh2Coeffs)
+        tfree(model->LTRAh2Coeffs);
+    if (model->LTRAh3dashCoeffs)
+        tfree(model->LTRAh3dashCoeffs);
+    return OK;
+}