Fixed bug #50212 (crash by ldap_get_option() with LDAP_OPT_NETWORK_TIMEOUT).

NEWS

@@ -21,6 +21,8 @@ PHP                                                                        NEWS
 - Fixed memory leak in extension loading when an error occurs on Windows.
   (Pierre)
 
+- Fixed bug #50212 (crash by ldap_get_option() with LDAP_OPT_NETWORK_TIMEOUT).
+  (Ilia, shigeru_kitazaki at cybozu dot co dot jp)
 - Fixed bug #50140 (With default compilation option, php symbols are
   unresolved for nsapi). (Uwe Schindler)
 - Fixed bug #50174 (Incorrectly matched docComment). (Felipe)

ext/ldap/ldap.c

@@ -1583,14 +1583,17 @@ PHP_FUNCTION(ldap_get_option)
 #ifdef LDAP_OPT_NETWORK_TIMEOUT
 	case LDAP_OPT_NETWORK_TIMEOUT:
 		{
-			struct timeval *timeout;
+			struct timeval *timeout = NULL;
 
 			if (ldap_get_option(ld->link, LDAP_OPT_NETWORK_TIMEOUT, (void *) &timeout)) {
 				if (timeout) {
 					ldap_memfree(timeout);
 				}
 				RETURN_FALSE;
-			}		       
+			}		    
+			if (!timeout) {
+				RETURN_FALSE;
+			}
 			zval_dtor(retval);
 			ZVAL_LONG(retval, timeout->tv_sec);
 			ldap_memfree(timeout);