Fix #23: Segmentation fault after fann_destroy

fann.c

@@ -1620,7 +1620,7 @@ PHP_FUNCTION(fann_destroy)
 		return;
 	}
 
-	RETURN_BOOL(PHPC_RES_DELETE(z_ann) == SUCCESS);
+	RETURN_BOOL(PHPC_RES_CLOSE(z_ann) == SUCCESS);
 }
 /* }}} */
 
@@ -2245,7 +2245,7 @@ PHP_FUNCTION(fann_destroy_train)
 		return;
 	}
 
-	RETURN_BOOL(PHPC_RES_DELETE(z_train_data) == SUCCESS);
+	RETURN_BOOL(PHPC_RES_CLOSE(z_train_data) == SUCCESS);
 }
 /* }}} */
 

tests/bug23.phpt

@@ -0,0 +1,20 @@
+--TEST--
+Test bug 
+--FILE--
+<?php
+$num_input = 2;
+$num_output = 1;
+$num_layers = 3;
+$num_neurons_hidden = 3;
+$ann = fann_create_standard($num_layers, $num_input, $num_neurons_hidden, $num_output);
+// destroy is the key - there is no segfault without it
+fann_destroy($ann);
+$ann = fann_create_standard($num_layers, $num_input, $num_neurons_hidden, $num_output);
+var_dump($ann);
+// now any accesss will segfault
+var_dump(fann_get_errno($ann));
+
+?>
+--EXPECTF--
+resource(%d) of type (FANN)
+int(0)