Merge 2 functionally identical typemaps

The only difference is code formatting.

Lib/php/php.swg

@@ -121,17 +121,8 @@
   }
 %}
 
-%typemap(in) SWIGTYPE &
-%{
-  if ($needNewFlow) {
-    $1 = ($1_ltype) $obj_value;
-  } else {
-    if (SWIG_ConvertPtr(&$input, (void **) &$1, $1_descriptor, 0) < 0 || $1 == NULL)
-      SWIG_PHP_Error(E_ERROR, "Type error in argument $argnum of $symname. Expected $1_descriptor");
-  }
-%}
-
-%typemap(in) SWIGTYPE &&
+%typemap(in) SWIGTYPE &,
+             SWIGTYPE &&
 %{
   if ($needNewFlow) {
     $1 = ($1_ltype) $obj_value;