v0_8: fix comparison in previous patch for pr1745132

If I had remembered to test the passing case I would have noticed
the comparison was wrong.

vvp/fvectors.cc

@@ -51,7 +51,7 @@ vvp_ipoint_t vvp_fvector_get(vvp_fvector_t v, unsigned i)
 {
       if (!v->size)
 	    return ipoint_index(v->cont.iptr, i);
-      if (v->size >= i) {
+      if (v->size <= i) {
 	    fprintf(stderr, "ERROR: index value (%d) must be less than "
 	            "element size (%d).\n", i, v->size);
 	    assert(0);