v.category: check if input vector map exists on report/print

git-svn-id: https://svn.osgeo.org/grass/grass/trunk@32193 15284696-431f-4ddb-bdfa-cd5b030d7da7

vector/v.category/main.c

@@ -181,6 +181,10 @@ main (int argc, char *argv[])
 	    }
 	    Vect_check_input_output_name ( in_opt->answer, out_opt->answer, GV_FATAL_EXIT );
 	}
+	else {
+	  if ( G_find_vector2 (in_opt->answer, "") == NULL)
+	      G_fatal_error (_("Vector map <%s> not found"), in_opt->answer);
+	}
 	
         Points = Vect_new_line_struct ();
 	Cats = Vect_new_cats_struct ();