repositories.type: path shows PHP Notice.

jibran · jibran · commit fdbde0aab186 · 2019-09-06T12:00:18.000+10:00
When lock file has a package imported using https://getcomposer.org/doc/05-repositories.md#path, running composer-lock-diff generates following notices: ``` PHP Notice: Undefined property: stdClass::$source in /home/jibran/www/snsw-d8/vendor/davidrjonas/composer-lock-diff/composer-lock-diff on line 75 Notice: Undefined property: stdClass::$source in /home/jibran/www/snsw-d8/vendor/davidrjonas/composer-lock-diff/composer-lock-diff on line 75 PHP Notice: Trying to get property 'reference' of non-object in /home/jibran/www/snsw-d8/vendor/davidrjonas/composer-lock-diff/composer-lock-diff on line 75 Notice: Trying to get property 'reference' of non-object in /home/jibran/www/snsw-d8/vendor/davidrjonas/composer-lock-diff/composer-lock-diff on line 75 PHP Notice: Undefined property: stdClass::$source in /home/jibran/www/snsw-d8/vendor/davidrjonas/composer-lock-diff/composer-lock-diff on line 75 Notice: Undefined property: stdClass::$source in /home/jibran/www/snsw-d8/vendor/davidrjonas/composer-lock-diff/composer-lock-diff on line 75 PHP Notice: Trying to get property 'reference' of non-object in /home/jibran/www/snsw-d8/vendor/davidrjonas/composer-lock-diff/composer-lock-diff on line 75 ```
diff --git a/composer-lock-diff b/composer-lock-diff
@@ -71,7 +71,7 @@ function diff($key, $from, $to, $base_path) {
 
 function version($pkg)
 {
-    if(substr($pkg->version,0,4) == 'dev-') {
+    if(substr($pkg->version,0,4) == 'dev-' && isset($pkg->source) && isset($pkg->source->reference)) {
         $version = substr($pkg->source->reference,0,7) ?: '';
     } else {
         $version = (string) $pkg->version;

Original file line number	Diff line number	Diff line change
`@@ -71,7 +71,7 @@ function diff($key, $from, $to, $base_path) {`
`71`	`71`
`72`	`72`	`function version($pkg)`
`73`	`73`	`{`
`74`		`- if(substr($pkg->version,0,4) == 'dev-') {`
	`74`	`+ if(substr($pkg->version,0,4) == 'dev-' && isset($pkg->source) && isset($pkg->source->reference)) {`
`75`	`75`	`$version = substr($pkg->source->reference,0,7) ?: '';`
`76`	`76`	`} else {`
`77`	`77`	`$version = (string) $pkg->version;`