Fix crash in stripcslashes("") (#5628)

diff --git a/ext/standard/string.c b/ext/standard/string.c
index 333bc1f8624c40ba556dcebf37f3cff92bfee577..5e4fcdfe92af04e1b4a9e836a77a9083b8392d94 100644 (file)
--- a/ext/standard/string.c
+++ b/ext/standard/string.c
@@ -1617,7 +1617,10 @@ PHPAPI void php_stripcslashes(char *str, int *len)
                        *target++=*source;
                }
        }
-       *target='\0';
+
+       if(nlen != 0) {
+               *target='\0';
+       }
 
        *len = nlen;
 }