Cleanup lxt and lxt2 EOS data.

This patch cleans up the memory allocated in the lxt and lxt2
$dumpvars routines.
(cherry picked from commit be158dd45f)

vpi/sys_lxt.c

@@ -297,6 +297,8 @@ static PLI_INT32 dumpvars_cb(p_cb_data cause)
 
 static PLI_INT32 finish_cb(p_cb_data cause)
 {
+      struct vcd_info *cur, *next;
+
       if (finish_status != 0) return 0;
 
       finish_status = 1;
@@ -306,6 +308,17 @@ static PLI_INT32 finish_cb(p_cb_data cause)
             lt_set_time64(dump_file, dumpvars_time);
       }
 
+      for (cur = vcd_list ;  cur ;  cur = next) {
+	    next = cur->next;
+	    free(cur);
+      }
+      vcd_list = 0;
+
+      vcd_names_delete(&lxt_tab);
+      nexus_ident_delete();
+      free(dump_path);
+      dump_path = 0;
+
       return 0;
 }
 

vpi/sys_lxt2.c

@@ -299,6 +299,8 @@ static PLI_INT32 dumpvars_cb(p_cb_data cause)
 
 static PLI_INT32 finish_cb(p_cb_data cause)
 {
+      struct vcd_info *cur, *next;
+
       if (finish_status != 0) return 0;
 
       finish_status = 1;
@@ -308,6 +310,17 @@ static PLI_INT32 finish_cb(p_cb_data cause)
             lxt2_wr_set_time64(dump_file, dumpvars_time);
       }
 
+      for (cur = vcd_list ;  cur ;  cur = next) {
+	    next = cur->next;
+	    free(cur);
+      }
+      vcd_list = 0;
+
+      vcd_names_delete(&lxt_tab);
+      nexus_ident_delete();
+      free(dump_path);
+      dump_path = 0;
+
       return 0;
 }
 

vpi/sys_vcd.c

@@ -264,6 +264,7 @@ static PLI_INT32 finish_cb(p_cb_data cause)
 	    free((char *)cur->ident);
 	    free(cur);
       }
+      vcd_list = 0;
       vcd_names_delete(&vcd_tab);
       vcd_names_delete(&vcd_var);
       nexus_ident_delete();