goptaverk: fixed bug causing segfault, improved error messages on missing variables

mima/goptaverk.c

@@ -459,6 +459,14 @@ static gopta_t *goptainit(int *barf, int *fd)
 	      SETBARF(barf,errno,"Couldn't malloc %d bytes (%d * %d items)",
 		      sizeof(item_t)*g->nitems,sizeof(item_t),g->nitems);
 	    }
+	  else /* Set all stringpointers to NULL to avoid segfault on free */
+	    {
+	      for (i=0;(i<g->nitems)&&(*barf==0);i++)
+		{
+		  g->itp[i].expose=NULL;
+		  g->itp[i].position=NULL;
+		}
+	    }
 	  
 	  /* itemN */
 	  for (i=0;(i<g->nitems)&&(*barf==0);i++)
@@ -472,6 +480,7 @@ static gopta_t *goptainit(int *barf, int *fd)
 		}
 	      
 	      s=findvar_stri(barf,GOPTA_FILTER,i);
+	      symbarfi(barf,GOPTA_FILTER,i);
 	      if(s!=NULL)
 		{
 		  getfilterpos(barf,fd,&g->itp[i].filter,s);
@@ -480,7 +489,9 @@ static gopta_t *goptainit(int *barf, int *fd)
 
 	      timerclear(&g->itp[i].filter_change_time);
 	      g->itp[i].expose=findvar_stri(barf,GOPTA_EXPOSE,i);
+	      symbarfi(barf,GOPTA_EXPOSE,i);
 	      g->itp[i].position=findvar_stri(barf,GOPTA_POSITION,i);
+	      symbarfi(barf,GOPTA_POSITION,i);
 	    }
 	}