fix a spell mistake

possbile => possible

diff --git a/Zend/zend_gc.c b/Zend/zend_gc.c
index edb952c2cd120d6e151ab0d16fb68d9f225beff2..7ed3078ed1e797da8fa036404391b68c97985a39 100644 (file)
--- a/Zend/zend_gc.c
+++ b/Zend/zend_gc.c
@@ -54,7 +54,7 @@
  *    gc_scan_black will be called on that node to scan it's subgraph.
  * otherwise (refcount == 0), it marks the node white.
  *
- * A node MAY be added to possbile roots when ZEND_UNSET_VAR happens or
+ * A node MAY be added to possible roots when ZEND_UNSET_VAR happens or
  * zend_assign_to_variable is called only when possible garbage node is
  * produced.
  * gc_possible_root() will be called to add the nodes to possible roots.