Fix maximum argument count of pcntl_forkx()

Closes GH-11199.

Author: nielsdos

NEWS

@@ -14,6 +14,9 @@ PHP                                                                        NEWS
   . Fixed bug GH-11134 (Incorrect match default branch optimization). (ilutov)
   . Fixed too wide OR and AND range inference. (nielsdos)
 
+- PCNTL:
+  . Fixed maximum argument count of pcntl_forkx(). (nielsdos)
+
 - PGSQL:
   . Fixed parameter parsing of pg_lo_export(). (kocsismate)
 

ext/pcntl/pcntl.c

@@ -1295,7 +1295,7 @@ PHP_FUNCTION(pcntl_forkx)
 	zend_long flags;
 	pid_t pid;
 
-	ZEND_PARSE_PARAMETERS_START(1, 2)
+	ZEND_PARSE_PARAMETERS_START(1, 1)
 		Z_PARAM_LONG(flags)
 	ZEND_PARSE_PARAMETERS_END();